Thomas de Isaac
Thomas was born about 1306 in Dunfennline, Scotland.  He died after 1337.

 Matilda Bruce
Matilda was born in Dunfennline, Scotland.  She died on June 20th, 1353 in Aberdeen, Grampian. Aberdeenshire, Scotland.  She was buried in Dunfermline Abbey, Fife, Scotland.

 Joan Isaac
Joan was born about 1344.  She died after 1362.

 Katherine de Isaac
Katherine was born before 1353.