On 07 Apr 1796 [his grandfather] Spencer Compton 8th Earl of Northampton (age 57) died. His son [his father] Charles Compton 1st Marquess Northampton (age 36) succeeded 9th Earl of Northampton. [his step-mother] Maria Smith Marchioness Northampton (age 30) by marriage Countess of Northampton.

On 24 May 1828 [his father] Charles Compton 1st Marquess Northampton (age 68) died. His son Spencer Compton 2nd Marquess Northampton (age 38) succeeded 2nd Marquess Northampton, 10th Earl of Northampton, 2nd Earl Compton of Compton in Warwickshire, 2nd Baron Wilmington of Wilmington in Sussex. [his wife] Margaret Douglas-Maclean-Clephane Marchioness Northampton (age 36) by marriage Marchioness Northampton.

On 02 Apr 1830 [his wife] Margaret Douglas-Maclean-Clephane Marchioness Northampton (age 38) died. Monument at Church of St Mary Magdalen, Castle Ashby [Map] sculpted by Pietro Tenerani (age 40) in 1836.

Margaret Douglas-Maclean-Clephane Marchioness Northampton: On 13 Dec 1791 she was born to Major-General William Douglas-Maclean-Clephane. On 24 Jul 1815 Spencer Compton 2nd Marquess Northampton and she were married. He the son of Charles Compton 1st Marquess Northampton. On 24 May 1828 Charles Compton 1st Marquess Northampton died. His son Spencer Compton 2nd Marquess Northampton succeeded 2nd Marquess Northampton, 10th Earl of Northampton, 2nd Earl Compton of Compton in Warwickshire, 2nd Baron Wilmington of Wilmington in Sussex. She by marriage Marchioness Northampton.

On 17 Jan 1851 Spencer Compton 2nd Marquess Northampton (age 61) died. He was buried at Church of St Mary Magdalen, Castle Ashby [Map]. His son [his son] Charles Compton 3rd Marquess Northampton (age 35) succeeded 3rd Marquess Northampton, 11th Earl of Northampton, 3rd Earl Compton of Compton in Warwickshire, 3rd Baron Wilmington of Wilmington in Sussex.