Nielsen Hayden genealogy
Ancestors of John de Thornhill
Bef 1203 - Bef 1250 (< 47 years) ┌── Essulf (of Birkin, Yorkshire, England - Bef 1159)
┌── Jordan fitz Essulf (of Thornhill, Dewsbury, Yorkshire, England - Aft 25 Jan 1194)
┌── Richard de Thornhill ( - Bef 1209)
John de Thornhill (Bef 1203 of Thornhill, Dewsbury, Yorkshire, England - Bef 1250)
└── Alice ( - Aft 1209)