alan had several children from his first two marriages, although only daughters appear to have reached adulthood. one daughter from his first marriage died whilst a scottish hostage of the english king, her death being reported in june 1213. helen, another daughter from alan's first marriage, married roger de quincy. although the date of this union is unknown, it may have taken place before alan's death, and could well have been the point when her husband came into possession of kippax. at some point before 1234, christiana, one of alan's daughters from his second marriage, married william de forz. in 1233, dervorguilla, a younger daughter from alan's second marriage, married john de balliol, lord of barnard castle. in addition to his illegitimate son thomas, alan had a like-named legitimate son. the latter, a product of alan's second marriage, was his only known legitimate male offspring. although the date of this son's death is unknown, he may have lived into in the 1220s.