▁the ▁Baron ▁B iss ett , ▁also ▁with ▁variants . ▁ ▁This ▁family ▁style ▁or ▁title ▁eventually ▁split , ▁in ▁a ▁manner , ▁to ▁provide ▁both ▁the ▁modern ▁County ▁An trim ▁surname ▁Mac ▁E oin , ▁ang lic ised ▁Mc Ke on / Mc Ke own , ▁and ▁the ▁surname ▁B iss ett ▁itself ▁( in ▁Ireland ), ▁the ▁latter ▁not ▁easily ▁distinguish able ▁from ▁the ▁typically ▁Scottish ▁B isset , ▁for ▁which ▁the ▁dou bling ▁of ▁the ▁final ▁- t -, ▁the ▁typical ▁practice ▁in ▁Ireland ▁from ▁the ▁ 1 6 th ▁century , ▁has ▁become ▁more ▁common ▁in ▁modern ▁times . ▁In ▁the ▁Irish ▁language ▁B iss ett ▁is ▁usually ▁written ▁B ised ▁( B ise id ). ▁ ▁From ▁Scotland ▁to ▁Ul ster ▁Pre cis ely ▁when ▁John ▁By set ▁arrived ▁with ▁his ▁family ▁from ▁Scotland ▁is ▁unknown , ▁but ▁he ▁appears ▁in ▁the ▁( sur v iving ) ▁English ▁documents ▁rel ating ▁to ▁Ireland ▁in ▁ 1 2 4 5 , ▁when ▁Henry ▁III ▁of ▁England ▁orders ▁ 5 0 ▁marks ▁to ▁be ▁given ▁out ▁of ▁the ▁tre as ury ▁to ▁him ▁as ▁a ▁gift . ▁By set ' s ▁activities ▁from ▁then ▁on ▁can ▁only ▁be ▁guess ed ▁from ▁the ▁short ▁description ▁of ▁his ▁career ▁in ▁Ireland ▁offered ▁by ▁the ▁ter se ▁Ann als ▁of ▁Ul ster , ▁reporting ▁his ▁death ▁twelve ▁years ▁later ▁in ▁ 1 2 5 7 . ▁This ▁entry ▁at ▁least ▁proves ▁that ▁he ▁had ▁established ▁himself ▁prom in ently ▁in ▁the ▁region ▁with