1 , ▁and ▁married ▁Vere ▁Bart rick ▁Baker ▁in ▁October , ▁ 1 9 2 8 , ▁with ▁whom ▁he ▁had ▁a ▁son , ▁Nav in ▁( born ▁in ▁ 1 9 2 9 ). ▁Other ▁sources ▁believe ▁S ull ivan ▁married ▁N urs ing ▁Sister ▁Jess ie ▁Mc No eg h ▁at ▁around ▁the ▁same ▁period , ▁with ▁whom ▁he ▁had ▁a ▁son ▁Patrick ▁Ev ely n ▁John ▁S ull ivan ▁( born ▁in ▁ 1 9 2 9 ). ▁In ▁the ▁early ▁ 1 9 3 0 s ▁he ▁was ▁increasing ly ▁trouble d ▁by ▁bad ▁health , ▁and ▁in ▁ 1 9 3 4 ▁was ▁diagn osed ▁as ▁suffering ▁from ▁dis sem in ated ▁s cl eros is . ▁ ▁He ▁died ▁in ▁Ch ob ham , ▁Sur rey , ▁on ▁ 1 1 ▁August ▁ 1 9 3 7 . ▁ ▁In ▁the ▁following ▁year ▁his ▁wid ow ▁was ▁awarded ▁a ▁Civil ▁List ▁p ension . ▁ ▁Publications ▁ ▁At oms ▁and ▁Elect rons ▁( 1 9 2 3 ) ▁The ▁History ▁of ▁Mathemat ics ▁in ▁Europe ▁( 1 9 2 5 ) ▁Three ▁Men ▁Disc uss ▁Rel ativity ▁( 1 9 2 5 ) ▁Be eth oven ▁( 1 9 2 7 ), ▁ ▁The ▁B ases ▁of ▁Modern ▁Science ▁( 1 9 2 8 ) ▁But ▁for ▁the ▁Grace ▁of ▁God ▁( 1 9 3 2 ) ▁How ▁Things ▁Be have : ▁A ▁Child ' s ▁Introduction ▁to ▁Physics ▁( 1 9 3 2 ) ▁The ▁Phys