ie . ▁He ▁adopted ▁the ▁additional ▁surname ▁of ▁Dav ie ▁in ▁ 1 8 4 6 ▁at ▁the ▁same ▁time ▁as ▁his ▁parents . ▁In ▁ 1 8 5 7 , ▁he ▁married ▁Ed win ▁August a ▁Williams , ▁daughter ▁of ▁Sir ▁James ▁Ham lyn - Will iams ▁and ▁Lady ▁Mary ▁Fort esc ue , ▁and ▁they ▁had ▁at ▁least ▁one ▁child : ▁Mary ▁F anny ▁Fer g us on ▁Dav ie ▁( born ▁ 1 8 5 7 ). ▁ ▁Military ▁career ▁Fer g us on ▁Dav ie ▁became ▁a ▁captain ▁of ▁the ▁Gren ad ier ▁Gu ards ▁in ▁ 1 8 5 5 , ▁and ▁in ▁the ▁same ▁year ▁fought ▁in ▁the ▁Crime an ▁War . ▁He ▁later ▁became ▁a ▁Lieutenant - Col onel ▁in ▁the ▁ 1 st ▁Dev on ▁Milit ia . ▁ ▁Political ▁career ▁He ▁was ▁elected ▁Liberal ▁MP ▁for ▁Bar n st ap le ▁at ▁the ▁ 1 8 5 9 ▁general ▁election ▁and ▁held ▁the ▁seat ▁until ▁ 1 8 6 5 ▁when ▁he ▁did ▁not ▁seek ▁re - e lection . ▁ ▁Baron et cy ▁He ▁inherited ▁the ▁title ▁of ▁Baron et ▁of ▁Cre edy ▁upon ▁his ▁father ▁Henry ▁Fer g us on ▁Dav ie ' s ▁death ▁on ▁ 3 0 ▁November ▁ 1 8 8 5 . ▁ ▁Other ▁activities ▁Fer g us on ▁Dav ie ▁was ▁also ▁a ▁Justice ▁of ▁the ▁Peace ▁for ▁Dev on , ▁Som erset ▁and ▁Car mar th ens hire , ▁a ▁Deput y ▁Lieutenant ▁for ▁Dev on