- I J K -

	Iago (GB) b c 1843 (Don John - Scandal, by Selim). Sire Line Pot8os. Family 11-e. In England he sired the dam of the July Stakes winner Dictator (b c 1858 The Cure), the dam of the July Stakes winner Saccharometer (br c 1860 Sweetmeat)  and  Bonnie Scotland (b c 1853) a leading sire in America. In France he got the Prix de la Foret winner Bravoure (ch f 1859) and the grandam of the Prix Lupin winner Almanza (b f 1872 Dollar).
	Ibrahim (GB) br c 1832 (Sultan - Sister to Cobweb, by Phantom). Sire Line Selim. Family 1-s. Bred by the 5th Earl of Jersey he won the Two Thousand Guineas, Riddlesworth and Grand Duke Michael Stakes. Sent to France in 1835 he got the Poule d'Essai winner Annetta (ch f 1839)  and the Prix de Diane winner Vergogne (b f 1846).
	Idle Boy (IRE) ch c 1845 (Harkaway - Iole, by Sir Hercules). Sire Line Pot8os. Family 6-b. He sired the Manchester Cup winner Pretty Boy (ch c 1853) and the Grand Prix de Paris winner Ceylon (b c 1863).
	Imperator (GB) br c 1776 (Conductor - Mare, by King Herod). Sire Line Matchem. Family 28. Bred by Lord Clermont he sired the good stallion Pipator (b c 1786). Imperator died the same year.
	Inheritor (GB) bl c 1831 (Lottery - Handmaiden, by Walton). Sire Line Eclipse. Family 4-b. Owned by G Cock he sired Nan Darrell (gr f 1844) the grandam of Vedette (br c 1854 Voltigeur) among others. He was exported to Belgium in 1845 and then sent to France in 1849. He also got the Prix de Diane winner Bounty (b f 1849) and died the same year.
	Interpreter (GB) b c 1815 (Soothsayer - Blowing, by Buzzard). Sire Line Matchem. Family 17-a. Bred by the 3rd Baron Foley he won the Two Thousand Guineas Stakes. He sired the Oaks winner Lilias (b f 1823) before he was sent to Russia after the 1823 season. He died in 1826 just prior to, or during, his return journey from Russia.
	Ion (GB) br c 1835 (Cain - Margaret, by Edmund). Sire Line Highflyer. Family 4-l. He got the Derby winner Wild Dayrell (br c 1852 prior to his export to France in 1851 where he got the Prix de Diane winner Finlande (b f 1858) and the Prix du Jockey Club winner Lion (b c 1853).
	Isinglass (GB) b c 1890 (Isonomy - Dead Lock, by Wenlock). Sire Line Sterling. Family 3-m.
	Isonomy (GB) b c 1875 (Sterling - Isola Bella, by Stockwell). Sire Line Sterling. Family 19-a.
	Ithuriel (GB) br c 1841 (Touchstone - Verbena, by Velocipede). Sire Line Camel. Family 2-n. He sired the Oaks winner Iris (ch f 1845 and the stallion Longbow (b c 1849).
	Jalap (GB) b c 1758 (Regulus - Red Rose, by Devonshire Blacklegs). Sire Line Godolphin Arabian. Family 6. Bred in Yorkshire by Thomas Duncombe of Helmsley Park, he was later purchased by Buckle & Hudson. He won the Gold Cup at Chester and a King's Plate at Nottingham before breaking down in next engagement. Despite covering very few well-bred mares he got some good runners, including Mr Wentworth's King's Plate winner Achilles (b c 1767). He was said to have sired a great number of very fine Hunters and Road-Horses and was judged the best Country Stallion in the Kingdom.
	Janus (GB) [Old] b c 1738 (Godolphin Arabian - Amorett, by Bartlet's Childers). Sire Line Godolphin Arabian. Family 15. Bred by Lord Godolphin he was later owned by Lord Middleton and Benjamin Rogers and covered at Mickleham, Surrey. He sired Janus* (ch c 1746).
	Janus (GB)* [Little Janus or Stiff Dick] ch c 1746 (Old Janus - Mare, by Fox - Mare, by Bald Galloway). Sire Line Godolphin Arabian. Janus was bred by Anthony Langley Swymmer in whose colours he ran in England from 1750 through 1752. During 1751 he recorded wins in a 5yo plate at Winchester and two weeks later in a 5yo plate at Salisbury. Despite problems with a "foul sinew" (presumably a bowed tendon) he started another four times finishing second three times and third once. Following his retirement from the turf he spent the following two years in the stud of Thomas Sims at Mostone, near Oxford. Purchased by Mordecai Booth he was sent to Virginia in 1756. Remaining with Booth in Gloucester County until 1760, he ran at least once, beating Valiant* over four miles in 1757. He passed through a number of owners in Virginia, then spent a couple of years in North Carolina before heading back to Virginia into the hands of John Goode of Chesterfield County. Goode sold him to W Barnes of Halifax County, North Carolina, in 1777 although he bought him back at the age of 34 and agreed to give £150 Virginia currency for him provided he was safely delivered at his stable in the winter of 1779 or 1780. Janus started for the stable of Mr Goode progressing as far as the stable of Colonel Haynes where he died in 1780. Harrison notes that his grandam, the Bald Galloway mare, may have been a brown mare named Mandaine bred by Mr Bartlet. Mandaine is mentioned in an advertisement [Pond 1755] for Surly, a brown horse bred by the Earl of Portmore, as the dam of Surly's sire, a Son of Fox. It is possible that this Son of Fox is the horse Lord Portmore raced as Victorious in 1730 and 1731, and whose pedigree is given in the General Stud Book, starting with the 1793 edition, as by Fox - Bald Galloway - Champion [E2:67].
	Jason (GB) gr c 1749 (Old Standard - Mare, by Beaufort Arabian). Sire Line Belgrade Turk. Family 102.
	Jerry (GB) bl c 1821 (Smolensko - Louisa, by Orville). Sire Line Matchem. Family 15.
	Jigg (GB) c 1701 (Byerley Turk - Charming Jenny, by Spanker). Sire Line Byerley Turk. Family 6.
	Jigg (GB) [Heneage's] br c 1720c (Jigg - Jigg Mare, by Jigg). Sire Line Byerley Turk. Family 69. The General Stud Book estimates his year of birth as "1720 (about)" and says his sire was the Halifax Goliah [GSB 1:107] however since the Halifax Goliah was foaled in 1722 either Jigg's year of birth or his sire must be incorrect. Available evidence indicates that Goliah is not his sire. A pedigree given by Mr Cheny for Silvertail says "Silvertail was got by the Mr. Heneage's White-Nose. White-Nose, which was out of the Dam of his Brown Horse called Jigg, Son of Old Jigg, and the Hall Arabian" [Racing Calender 1744:xxiv, xxv]. This suggests that Heneage's Jigg was sired by Old Jigg. The close inbreeding of this pedigree may have compelled the compilers of the General Stud Book to avoid it. Heneage's Jigg ran in 1728 at Alford, Lincolnshire, placing second for a plate of £25 which was won by the Duke of Ancaster's Pert [Buckhunter] (ch c Ely Turk). In 1738 He covered at the stud of Mr Hildyard at North Ousby, near Louth in Lincolnshire, for a fee of half a guinea. An unnamed daughter of Heneage's Jigg produced four winners, Hunt's Jigg (ch c 1741 Bolton Goliah), Jigg-of-Jiggs (br c 1745 Hunt's Jigg), Hunt's Spanker (b c 1747 Bolton Goliah) and Hunt's Fox (b c 1749 Bolton Goliah).
	Joe Andrews (GB) b c 1778 (Eclipse - Amaranda, by Omnium). Sire Line Eclipse. Family 4-b.
	Jolly Roger (GB) [Roger of the Vale] ch c 1741 (Roundhead - Sister to Miss Barforth, by Crofts Partner). Sire Line Darley Arabian. Family 2. Bred by John Holme he was owned by Selden Craddock. Although erroneously identified as the horse named Jolly Roger who became a successful stallion in colonial America this colt was not exported.
	Jolly Roger (GB)* ch c 1743 (Stamford's Mogul - Mare, by Partner. Sire Line Godolphin Arabian. He was imported by John Spotswood and his brother-in-law Colonel Bernard Moore with Creeping Kate in 1751. The Partner mare is as yet unidentified. Jolly Roger* stood the seasons 1752-58 at Spotswood's farm in Spotsylvania County, 1759-65 at Wormeley's farm in Middlesex County, 1766 at Charles Harrison's in Prince George County, 1767 at Freeman's Brook in Sussex County, 1768-69 at Allen's Mill, Brunswick County, all in Virginia. He sired the unnamed mares who became the taproots of two American mare families: A26 and A 51. Jolly Roger* died in 1769. Jolly Roger* was a distinguished sire and appears as a frequent cross in old Virginia pedigrees. The American Stud Book erroneously shows Jolly Roger* to be Roger of the Vale, an English horse. However, in a letter by John Baylor dated 2 August 1761 (ten years after Jolly Roger's importation), Baylor describes Jolly Roger, formerly owned by the Duke of Kingston, as running well in 1749, as is described in the Racing Calendars of the day. The pedigree given in the Racing Calendar reads by Mogul - Partner, which is the source of the pedigree given here. Another certificate gives the horse's importer as John Spotswood and his brother-in-law Bernard Moore in 1751. When the American Stud Book was being compiled the letters were unknown, and at the time, Randolph of Roanoke attempted to match Jolly Roger* with a horse in the General Stud Book. The only colt he could find who corresponded with the date was Roger of the Vale, and an explanation for his name change was never provided.
	Juniper (GB)* b c 1752 (Babraham - Aura, by Stamford Turk). Sire Line Godolphin Arabian. Family 9-a.
	Jupiter (GB) ch c 1774 (Eclipse - Mare, by Tartar). Sire Line Eclipse. Family 9-b.
	Justice (GB) [Halifax's] b c 1725 (Hampton Court Litton Arabian - Aldby Jenny, by Manica). Sire Line Hampton Court Litton Arabian. Family 72.
	Kentucky (USA) b c 1861 (Lexington - Magnolia, by Glencoe). Sire Line King Herod. Family 4-m. Bred by John M Clay he was described as a rangy bright bay with a narrow strip and white off fore pastern. He won twenty-one races, including the Travers Stakes, Sequel Stakes, Grand National Handicap, and the Saratoga Cup twice. Purchased by August Belmont he entered the Nursery Stud on Long Island in 1869. Among others he sired Bertram (b c 1873), Elastic (b f 1871) and Woodbine (ch f 1869). He died in New York in April of 1875 and was inducted into the American Racing Hall of Fame in 1983.
	Kilwarlin (GB) br c 1884 (Arbitrator - Hasty Girl, by Lord Gough). Sire Line Matchem. Family 9-d. Bred by J Connolly he was a half brother to the useful stallion Bendigo (br c 1880 Ben Battle) and won the St Leger Stakes in 1887. His son Ogden* (br c 1894) was influential in America. His daughter Navaretta (bl f 1893) was ancestress of Foxlaw (br c 1922) and Comedy King (b c 1923).
	Kincsem (AH) ch f 1874 (Cambuscan - Waternymph, by Cotswold). Sire Line Camel. Family 4-o.
	King Fergus (GB) ch c 1775 (Eclipse - Tuting's Creeping Polly, by Portmore's Othello). Sire Line King Fergus. Family 6-x.
	Kingfisher (USA) b c 1867 (Lexington - Eltham Lass, by Kingston). Sire Line King Herod. Family 12-c. Bred in Kentucky by R A Alexander he was later owned by Daniel Swigert then August Belmont. He won the Belmont and Travers Stakes and the Jerome Handicap. He sired Belladonna (ch f 1884), Feu Follet (b f 1875) and Lady Rosebery (ch f 1878).
	King Herod (GB) b c 1758 (Tartar - Cypron, by Blaze). Sire Line King Herod. Family 26.
	King Herod (USA) [Hayne's] b c 1768 (Fearnought* - Gantt's Britannia, by Othello*). Sire Line Godolphin Arabian. Family 101. Described as a bright bay standing 15.2 or 15.3 hands he raced at Long Island and Philadelphia. Owned by Israel Waters and later purchased by Colonel Herbert Haynes of Warren County, North Carolina. He sired the fourth dam of Marion (b c 1820).
	King Salmon (GB) b c 1930 (Salmon-Trout - Malva, by Charles O'Malley). Sire Line Buzzard. Family 1-e.
	King Tom (GB) b c 1851 (Harkaway - Pocahontas, by Glencoe). Sire Line Pot8os. Family 3-n. He won three races and finished second for the Derby. Standing 16 hands he was said to be slightly deficient in quality although not coarse. His withers were very high and his action light and corky. His stock was said to resemble him in size and substance although many had "small weak looking hocks". He sired the Derby winner Kingcraft (b c 1867), three Oaks winners, Hippia (b f 1864), Tormentor (b f 1863) and Hannah (b f 1868) who also won the One Thousand Guineas, and another One Thousand Guineas winner, Tomato (b f 1861). Several of his offspring made their way to America including Camilla* (b f 1864), Genista* (b f 1863), Great Tom* (ch c 1873), King Ban* (ch c 1875), King Ernest* (b c 1869), Lady Mentmore* (b f 1869), Phaeton* (b c 1865) and Princess* (ch f 1872). King Tom was a champion sire in 1870 and 1871.
	Kingston (GB) b c 1849 (Venison - Queen Anne, by Slane). Sire Line Highflyer. Family 12. A winner of the Goodwood Cup in 1852 he sired the Derby winner Caractacus (b c 1859), the Oaks winner Queen Bertha (b f 1860), Babta* (b f 1858), Blue Mantle* (b c 1860), Eltham Lass* (b f 1859), Hercules* (b c 1857) and Non Pareille* (b f 1861).
	Knight Of St. George (IRE)* b c 1851 (Birdcatcher - Maltese, by Hetman Platoff). Sire Line Birdcatcher. Family 26.
	Knight Of The Whistle (GB) ch c 1838 (Velocipede - Mare, by Whisker). Sire Line King Fergus. Family 3. A winner of the Royal Hunt Cup in 1843 he sired the dam of the Irish Derby winner Billy Pitt (br c 1867 Plum Pudding) and the dam of the Gold Vase winner Eltham (ch c 1862 Marsyas).
	Kosciusko (USA) ch c 1815 (Sir Archy - Lottery, by Bedford*). Sire Line King Herod. Family 1-a. Bred by Colonel Richard Singleton of South Carolina he won 4 races at 3-mile heats. He sired Clara Fisher (ch f 1828), Mary Jones (b f 1827), and the second dam of George Martin Mare (b f 1848).