She married her eldest daughter into the House of York , siding with Edward IV .
Philippa Gregory 's semi-fictional The White Queen attributes the mist to Elizabeth Woodville 's mother , Jacquetta of Luxembourg who betrayed allegiances to her pro-Lancastrian dead husband .
Philippa Gregory married Philippa Gregory 's eldest daughter into the House of York , siding with Edward IV .
Philippa Gregory 's semi-fictional The White Queen attributes the mist to Elizabeth Woodville 's mother , Jacquetta of Luxembourg who betrayed allegiances to her pro-Lancastrian dead husband .