Another  member of this dynasty married Elizabeth (*) Woodville.
This dynasty was the answer to the first tossup of Chris Frankel's history doubles. This dynasty's ancestors included Edmund of Langley, and one member of this dynasty became famous for his opposition to (+) William de la Pole and gained the title "Protector of the Realm". Another  member of this dynasty married Elizabeth (*) Woodville. A plot against one member of this dynasty was led by the Duke of Clarence, who was allegedly executed by being drowned in wine. For ten points name this dynasty represented by the white rose whose last monarch died at Bosworth Field, the rivals of the House of Lancaster. 
This dynasty was the answer to the first tossup of Chris Frankel's history doubles.
House of York