▁Lie uten ancy ▁He ▁later ▁served ▁as ▁a ▁Deput y ▁Lieutenant ▁of ▁County ▁Down . ▁ ▁Personal ▁life / de ath ▁In ▁ 1 9 5 7 , ▁he ▁married ▁Ev ely n ▁McC orm ack ; ▁the ▁couple ▁had ▁three ▁daughters . ▁Cre an ey ▁died ▁at ▁his ▁home ▁in ▁Cult ra ▁in ▁ 2 0 0 8 , ▁aged ▁ 7 4 , ▁from ▁le uka emia . ▁ ▁References ▁ ▁Category : 1 9 3 3 ▁birth s ▁Category : 2 0 0 8 ▁death s ▁Category : Pe ople ▁from ▁County ▁Arm agh ▁Category : Pe ople ▁from ▁County ▁Down ▁Category : Que en ' s ▁Coun sel ▁ 1 9 0 1 – 2 0 0 0 ▁Category : Que en ' s ▁Coun sel ▁ 2 0 0 1 – ▁Category : O ffic ers ▁of ▁the ▁Order ▁of ▁the ▁British ▁Empire ▁Category : D ise ase - related ▁death s ▁in ▁Northern ▁Ireland ▁Category : De put y ▁Lie uten ants ▁of ▁Down ▁Category : Al umn i ▁of ▁Queen ' s ▁University ▁B elf ast <0x0A> </s> ▁Jan ▁K ou m ▁( ; ▁born ▁February ▁ 2 4 , ▁ 1 9 7 6 ) ▁is ▁a ▁Ukrain ian ▁American ▁entrepr ene ur ▁and ▁computer ▁programmer . ▁He ▁is ▁the ▁co - found er ▁and ▁was ▁the ▁CE O ▁of ▁Wh ats App , ▁a ▁mobile ▁mess aging ▁application ▁which ▁was ▁acquired ▁by ▁Facebook ▁Inc . ▁in ▁February ▁ 2 0 1 4 ▁for ▁US