▁on ▁he ▁worked ▁in ▁com ics , ▁drawing ▁" The ▁Myst ery ▁of ▁Study ▁ 1 3 " ▁for ▁Spark ler ▁( 1 9 3 7 ), ▁" Bre ed ▁of ▁the ▁Br uden ells " ▁for ▁Kno ck out ▁( 1 9 4 9 ), ▁and ▁an ▁adaptation ▁of ▁Lor na ▁Do one ▁for ▁Princess ▁( 1 9 6 0 ). ▁ ▁On ▁ 7 ▁September ▁ 1 9 1 2 ▁at ▁H amp st ead ▁Bro ck ▁married ▁his ▁cousin , ▁Dor is ▁Joan ▁Peg ram , ▁the ▁daughter ▁of ▁the ▁sculpt or ▁Henry ▁Alfred ▁Peg ram , ▁brother ▁of ▁the ▁illustr ator ▁Fred ▁Peg ram . ▁H . ▁M . ▁Bro ck ▁died ▁in ▁the ▁Ev ely n ▁N urs ing ▁Home ▁in ▁Cambridge ▁in ▁July ▁ 1 9 6 0 ▁aged ▁ 8 5 . ▁In ▁his ▁will ▁he ▁left ▁£ 7 9 6 1 ▁ 1 3 s ▁ 5 d ▁to ▁his ▁wid ow , ▁Dor is ▁Joan ▁Bro ck .< ref >[ http :// search . anc est ry . co . uk / ie x ec ? ht x = View & r = 5 5 3 8 & db id = 1 9 0 4 & i id = 3 2 8 5 8 _ 6 2 5 9 8 8 _ 3 2 7 4 - 0 0 3 8 6 & fn = Hen ry + Mat te w & ln = B rock & st = r & ss rc =&