▁By set , ▁taking ▁into ▁account ▁either ▁his ▁or ▁John ▁of ▁Is lay ' s ▁previous ▁service ▁in ▁driving ▁out ▁the ▁Crown ' s ▁enemies ▁( the ▁language ▁of ▁the ▁document ▁leaving ▁it ▁unclear ▁which ). ▁Not ably ▁John ▁of ▁Is lay ▁describes ▁Sir ▁Hugh ▁as ▁his ▁k ins man , ▁as ▁he ▁also ▁may ▁be ▁described ▁less ▁than ▁two ▁weeks ▁later ▁at ▁the ▁beginning ▁of ▁June , ▁when ▁the ▁Crown ▁gr ants ▁a ▁certain ▁" John ▁By set ▁of ▁Rach ry n " ▁protection ▁out ▁of ▁regard ▁for ▁his ▁k ins man ▁the ▁Lord ▁of ▁the ▁Is les . ▁ ▁Mac ▁E oin ▁and ▁the ▁O ' Ne ills ▁The ▁first ▁certain ▁contact ▁of ▁the ▁B isset ts ▁with ▁the ▁O ' Ne ill ▁dynast y ▁is ▁recorded ▁in ▁ 1 2 8 7 , ▁when ▁Richard ▁Ó g ▁de ▁Burg h ▁involved ▁the ▁short - l ived ▁Ear ld om ▁of ▁Ul ster , ▁to ▁which ▁the ▁B isset ts ▁still ▁belonged ▁at ▁this ▁time , ▁in ▁an ▁O ' Ne ill ▁succession ▁dispute . ▁But ▁since ▁this ▁is ▁also ▁the ▁earliest ▁known ▁occurrence ▁of ▁the ▁G ael ic ▁line age ▁or ▁pr inc ely ▁style ▁Mac ▁E oin , ▁only ▁a ▁few ▁dec ades ▁after ▁the ▁arrival ▁of ▁the ▁family ▁in ▁Ul ster , ▁the ▁B isset ts ▁have ▁already ▁cult ur ally ▁assim il ated ▁to ▁a ▁notable ▁degree : ▁ ▁There ▁are ▁no ▁surv iving ▁mentions ▁of ▁the ▁Mac ▁E oin ▁B isset ts ▁in ▁the ▁Irish ▁sources