Whitenose was bred by Thomas Panton¹ (1698-1782), who occupied the post of "Keeper of the King's Running Horses" following Tregonwell Frampton and bred the dam of Whitenose, Sister to Blaze. He also bred Blaze (b c 1733 Childers), a Champion Sire in 1751, who got the dam of King Herod (b c 1758 Tartar). Mr Panton was the father of "polite" Tommy Panton (1731-1808), the latter a noted Newmarket horseman who won the Derby with Noble (b c 1783 Highflyer).

It is also possible the Whitenose was bred by Sir William Middleton (1700-1757), 3rd Baronet, Belsay Castle, Northumberland, as the inscription on his portrait notes that he was "bred by the Rt. Honble. the Ld. Middleton, he was got by the Godolphin Arabian his dam was got by Childers out of a full sister to Blaze". He was subsequently owned by Charles Spencer (1706-1758), 3rd Duke of Marlborough, who was said to have presented him to Charles Colyear (1700-1785), 2nd Earl of Portmore.

He was never trained and died at the young age of thirteen, just as his reputation as a stallion was becoming established by the turf results of his offspring, notably Mr Fenwick's Duchess. He stood at Hampton Court in 1753 for a fee of 20gs and at Bedale, Yorkshire, in 1754. He was advertised to cover for the 1755 season at Mr John Mudd's establishment, the Old Salutation, in Leeming Lane, near Bedale, for a fee of 10 guineas but died beforehand. Among his successful offspring on the turf were Lord Chedworth's Colt, who won at Burford, Lord Onslow's Victorious (bl c 1747), who was unbeaten in 1752, and Mr Rogers's Aaron (b c 1747), the latter the rival of Little Driver (ch c 1743 Beaver's Driver) in some famous matches. Lord Portmore also raced several colts by Whitenose, including Rake (gr c 1754), who won the Royal Plate at Ipswich in 1758, beating Mr Grisewood's Bustler (gr c 1754 Trifle) and Mr Crofts Miss Slamerkin (gr f 1754 Whittington), the latter winning the first heat from Bustler before going lame in the second heat.

Although none of his sons left stock that bred on, two of his daughters made notable contributions to the stud books of England and America. Whitenose died "suddenly" at Doncaster in February of 1755.

  ¹  The General Stud Book attributes Whitenose and his unnamed full brother to Mr Panton [GSB 1:58].