Lord Thomas Boyd Of Kilmarnock
Thomas was born about 1395 in Kilmarnock,Ayrshire,Scotland.  He died on July 9th, 1439 in Craignaught Hill,Renfrewshire,Scotland.¹ 

 Isabel
Isabel was born about 1395 in Scotland.  She died about 1439.

 Margaret Boyd
Margaret was born about 1413 in Kilmarnock,Ayrshire,Scotland.  She died after September 16th, 1453 in Eaglesham,Renfrewshire,Scotland.² 

 Lord Robert Boyd Of Kilmarrock
Robert was born about 1415 in Kilmarnock,Ayrshire,Scotland.  He died before October 1482 in In exile at Alnwick,Northumberland,England.¹