Thomas Boyd
Thomas was born about 1400 in Kilmarnock, Renfrew, Scotland.  He died on July 19th, 1439 in Craignaught Hill, Renfrew, Scotland.

 Isabel
Isabel was born about 1400.  Isabel is no longer alive.

 Margaret Boyd
Margaret was born about 1416 in Kilmarnock, Renfrew, Scotland.