▁the ▁titles ▁passed ▁to ▁his ▁son , ▁the ▁fifth ▁Earl . ▁ ▁The ▁fifth ▁Earl , ▁Charles ▁W ent worth - F itz will iam , ▁represented ▁several ▁constitu encies ▁in ▁the ▁House ▁of ▁Commons ▁and ▁was ▁made ▁a ▁Knight ▁of ▁the ▁G arter ▁in ▁ 1 8 5 1 . ▁In ▁ 1 8 5 6 ▁Lord ▁Fitz will iam ▁assumed ▁by ▁Royal ▁lic ence ▁the ▁additional ▁surname ▁of ▁W ent worth . ▁He ▁was ▁succeeded ▁by ▁his ▁second ▁but ▁el dest ▁surv iving ▁son , ▁the ▁sixth ▁Earl . ▁ ▁The ▁sixth ▁Earl ▁was ▁William ▁W ent worth - F itz will iam . ▁He ▁sat ▁as ▁Member ▁of ▁Parliament ▁for ▁Mal ton ▁and ▁County ▁W ick low ▁and ▁served ▁as ▁Lord ▁Lieutenant ▁of ▁the ▁West ▁R iding ▁of ▁York shire . ▁His ▁el dest ▁son ▁William ▁Fitz Will iam , ▁Vis count ▁Mil ton , ▁was ▁also ▁a ▁member ▁of ▁parliament ▁but ▁prede ce ased ▁his ▁father . ▁Lord ▁Fitz will iam ▁was ▁therefore ▁succeeded ▁by ▁his ▁grand son , ▁the ▁sevent h ▁Earl . ▁ ▁Also , ▁Lady ▁M abel ▁Fitz will iam , ▁a ▁social ist ▁politician ▁and ▁" an ▁ar dent ▁pione er ▁in ▁education ▁and ▁social ▁w elf are ", ▁was ▁a ▁grand d augh ter ▁of ▁the ▁ 6 th ▁Earl . ▁ ▁The ▁sevent h ▁Earl ▁was ▁William ▁W ent worth - F itz will iam ▁( 2 5 ▁July ▁ 1 8 7 2 ▁– ▁ 1 5 ▁February ▁ 1 9 4