Margaret de Fiennes, b: 1262



		^{Roger III de Mortimer}^{b.1221 Radnorshire, Wales d.1282 Kingsland, England}

	^{Edmund de Mortimer}^{b.1252 Wigmore, England d.1304 Wigmore, England}

		^{Maud de Braose}^{b.1226 Bramber, Sussex, England d.1300 Kingsland, England}

^{Roger IV de Mortimer}^{b.1287 Thornbury, England d.1330 Elms, England}

		^{Guillaume_II (William) de Fiennes}^{b.1252 Wendover, England d.1302 Kortrijk, Belgium}

	^{Margaret de Fiennes}^{b.1262 Fiennes, France d.1331 Wigmore, England}

		^{Blanche de Brienne}^{b.1252 Courtain, France d.1302 Wigmore, England}