▁the ▁el dest ▁son ▁of ▁Richard ▁Mag enis ▁and ▁his ▁second ▁wife , ▁Elizabeth ▁Ber keley , ▁daughter ▁of ▁Col . ▁William ▁Ber keley ▁and ▁sister ▁of ▁George ▁Ber keley , ▁Bishop ▁of ▁C loy ne . ▁He ▁was ▁the ▁elder ▁brother ▁of ▁the ▁Very ▁Rev . ▁William ▁Mag enis , ▁Dean ▁of ▁Kil more . ▁ ▁Mar riage ▁and ▁issue ▁ ▁Mag enis ▁married ▁first ly , ▁ 1 7 8 8 , ▁Lady ▁Elizabeth ▁Anne ▁Cole ▁( d ied ▁ 2 6 ▁May ▁ 1 8 0 7 ), ▁daughter ▁of ▁William ▁Cole , ▁ 1 st ▁Earl ▁of ▁En n isk ill en ▁and ▁nie ce ▁of ▁Hon . ▁Arthur ▁Cole - H amilton , ▁with ▁whom ▁he ▁represented ▁En n isk ill en . ▁They ▁had ▁five ▁sons ▁and ▁four ▁daughters . ▁ ▁Richard ▁William ▁Mag enis , ▁his ▁he ir ▁William ▁John ▁Cole ▁Mag enis ▁Lie ut .- Col . ▁Henry ▁Arthur ▁Mag enis ▁( J uly ▁ 1 7 9 5 ▁– ▁ 1 1 ▁June ▁ 1 8 2 8 ) ▁of ▁the ▁ 8 7 th ▁Royal ▁Irish ▁F us ili ers ▁John ▁B alf our ▁Mag enis ▁( d ied ▁ 1 8 6 2 ), ▁married ▁Frances ▁Marg are tta ▁Moore , ▁daughter ▁of ▁Judge ▁Arthur ▁Moore ▁Sir ▁Arthur ▁Mag enis ▁ ▁( – 1 8 6 7 ), ▁British ▁diplom at ▁ ▁Anne ▁Louise ▁Mag enis ▁( d ied ▁ 1 8 5 5 ), ▁married ▁in ▁ 1 8 2 1