, ▁ 1 st ▁Baron ▁Mac lay , ▁and ▁his ▁wife ▁Mar tha ▁( née ▁Str ang ), ▁two ▁elder ▁brothers ▁having ▁died ▁during ▁World ▁War ▁I . ▁John ▁Mac lay , ▁ 1 st ▁Vis count ▁Mu ir sh iel , ▁was ▁his ▁younger ▁brother . ▁Lord ▁Mac lay ▁married ▁Nancy ▁Margaret , ▁daughter ▁of ▁Robert ▁Cov entry ▁Gre ig , ▁in ▁ 1 9 3 6 . ▁Their ▁wed ding ▁was ▁held ▁in ▁P ais ley ▁Ab bey . ▁He ▁was ▁educated ▁at ▁F ettes ▁College , ▁Edinburgh ▁and ▁Tr inity ▁College , ▁Cambridge . ▁He ▁died ▁in ▁hospital ▁November ▁ 1 9 6 9 , ▁aged ▁ 7 0 , ▁and ▁a ▁mem orial ▁service ▁was ▁held ▁for ▁him ▁in ▁Glasgow ▁C athedral . ▁He ▁was ▁succeeded ▁in ▁the ▁bar ony ▁by ▁his ▁el dest ▁son ▁Joseph . ▁ ▁Business ▁Mac lay ▁went ▁into ▁the ▁sh ipping ▁business ▁and ▁became ▁chairman ▁of ▁the ▁company ▁his ▁father ▁had ▁established , ▁Mac lay ▁and ▁Mc Int y re ▁of ▁Glasgow . ▁He ▁was ▁president ▁of ▁the ▁Chamber ▁of ▁Sh ipping ▁of ▁the ▁United ▁Kingdom , ▁ 1 9 4 6 – 4 7 , ▁Chair man ▁of ▁the ▁General ▁Council ▁of ▁British ▁Sh ipping , ▁ 1 9 4 6 – 4 7 ▁and ▁Lord ▁Dean ▁of ▁Gu ild , ▁Glasgow , ▁ 1 9 5 2 – 5 4 . ▁In ▁February ▁ 1 9 4 7 , ▁he ▁cha ired ▁the ▁International ▁Sh ipping ▁Conference ▁in ▁London . ▁He ▁was