On 21 March 1272 he married Isabella of Beirut ( 1252 - 1282/83 ) , Lady of Beirut and daughter of John II of Beirut .
Head entity: john ii of beirut Q452724 21 22 23 24
Tail entity: isabella of beirut Q3141945 6 7 8
Relation (head \u2192 tail): P40
Inverse relation (tail \u2192 head): P22