John de Plessis, b: 1207 - Plessis, France


			^{Ralph du Pleiss}^{b.1125 Barnham, Suffolk, England d.}

		^{Ralph du Plessis}^{b.1177 Le Plessis, France d.1227 Kidlington, England}

	^{John de Plessis}^{b.1207 Plessis, Morbihan, France d.1262 Hook Norton, England}

		^Des Breux^{b.1161 Poitou-Charentes, France d.1223}

^{Sir Hugh de Plessis}^{b.1225 Hook Norton, England d.1292 Hook Norton, England}

		^{Hugh de Saunford}^{b.1187 Wallingford, England d.1233 Great Missenden, England}

	^{Christian (A) de Saunford}^{b.1207 Wallingford, England d.1242 Kirtlington, England}

		^Joan Noers^{b.1190 Great Missenden, England d.1252 Great Missenden, England}