William III de Aton
William III was born about 1299 in Malton & Ayton, Yorkshire, England.  He died in Old Malton, Yorkshire, England.

 Isabel de Percy
Isabel was born after 1324.  She died before May 25th, 1368.

 Anastasia de Aton
Anastasia was born before 1368.

 Catherine de Aton
Catherine was born before 1368.

 Elizabeth de Aton
Elizabeth was born before 1368.  She died on May 8th, 1402.