On 19 Mar 1643 William Compton (age 18) and James Compton 3rd Earl of Northampton (age 20) fought for the Royalist army at Hopton Heath Hopton, Staffordshire.

Spencer Compton 2nd Earl of Northampton (age 41) was killed. His son James Compton 3rd Earl of Northampton (age 20) succeeded 3rd Earl of Northampton, 4th Baron Compton of Compton in Warwickshire.