William "Longlegs" de Douglas Sir

William "Longlegs" was born about 1215.  William "Longlegs"'s father was Archibald de Douglas Sir and his mother was Margaret de Crauford.  His paternal grandparents were William de Duglas and daughter of Moray Kersdale; his maternal grandfather was John de Crauford Lord Crawford Sir. He had a brother named Andrew of Hermiston.  He was the older of the two children.  He died in 1276.