John de Lacy 2nd Earl of Lincoln, 7th Baron of Halton Castle, 5th Lord of Bowland and Constable of Chester (1192–1240) Parents Matilda de Clare Roger de Lacy Children Edmund de Lacy, Baron of Pontefract Joan de Lacy Maud de Lacy, Countess of Gloucester Siblings unknown daughter de Lacy Partners Margaret de Quincy, Countess of Lincoln Alice de l'Aigle
