) ▁Lang don ▁and ▁the ▁great - grand son ▁of ▁John ▁Jacob ▁Ast or . ▁ ▁He ▁was ▁a ▁cousin ▁of ▁L t . ▁Col . ▁John ▁Jacob ▁Ast or ▁IV . ▁His ▁pat ernal ▁line age ▁desc ended ▁from ▁John ▁O ' K ane ▁who ▁em igr ated ▁to ▁the ▁country ▁in ▁ 1 7 5 2 ▁from ▁County ▁London der ry ▁and ▁An trim , ▁Ireland . ▁ ▁During ▁the ▁American ▁Revolution ary ▁War , ▁O ' K ane ▁( who ▁dropped ▁the ▁"' O " ▁once ▁in ▁America ) ▁was ▁living ▁at ▁Sh ary v ogne , ▁his ▁estate ▁in ▁Dutch ess ▁County , ▁which ▁was ▁conf isc ated ▁after ▁the ▁War ▁due ▁to ▁his ▁Lo yal ist ▁times . ▁His ▁el dest ▁son , ▁John ▁Jr ., ▁stayed ▁and ▁became ▁one ▁of ▁the ▁most ▁prominent ▁mer ch ants ▁in ▁New ▁York . ▁ ▁The ▁family ▁lived ▁at ▁" Be ach ▁Cl iffe ", ▁designed ▁by ▁Det lef ▁L ien au , ▁which ▁was ▁one ▁the ▁earliest ▁New port ▁c ott ages ▁" to ▁att ain ▁a ▁sort ▁of ▁Be aux - Ar ts ▁pur ity ." ▁ ▁After ▁prep ▁school ▁in ▁New ▁York , ▁K ane ▁attended ▁and ▁graduated ▁from ▁the ▁United ▁States ▁Naval ▁Academy ▁at ▁Ann apolis , ▁Maryland ▁in ▁June ▁ 1 8 6 6 . ▁After ▁his ▁service ▁in ▁the ▁Navy , ▁he ▁entered ▁Cambridge ▁University ▁in ▁England ▁where ▁he ▁graduated ▁in ▁ 1 8 7 3 . ▁After ▁returning ▁the ▁United ▁States , ▁he ▁studied