In 1190 at the Siege of Acre Routrou Chateaudun IV Count Perche (age 55) and Raoul Coucy (age 55) were killed.

William Ferrers 3rd Earl of Derby (age 54) was killed. His son William Ferrers 4th Earl of Derby (age 22) succeeded 4th Earl Derby. Agnes Gernon Countess Derby by marriage Countess Derby.

In 1191 Waleran V de Beaumont Count of Meulan died at the Siege of Acre.

On 15 Oct 1191 Raoul I Count of Clermont-en-Beauvaisis (age 51) was killed during the Siege of Acre.