Sir William III de Aton
Sir William III was born about 1320 in Malton & Ayton, Yorkshire, England.  Sir William III is no longer alive.

 Isabel De Percy
Isabel was born about 1327 in Alnwick, Northumberland, England.  She died on May 25th, 1368.

 Elizabeth De Aton
Elizabeth was born about 1360 in Malton & Ayton, Yorkshire, England.  She died in 1394.

 Catherine de Aton
Catherine was born about 1367 in Malton & Ayton, Yorkshire, England.