William (Sir) de ATON
William (Sir) de was born about 1299 in Ayton, Yorkshire, England.

 Isabel de PERCY
Isabel de was born in 1299 in Yorkshire, England.  She died before May 25th, 1368.

 Elizabeth de ATON
Elizabeth de was born about 1339 in Ayton, Yorkshire, England.  She died in May 1402 in Stokeburne, Durham, England.