Watt, Graduates, 20: Marchisius (also called Marchius Ambini/Albeni) was in the familia of Bishop Roger of St Andrews and witnesses several documents as his clerk from 2 February 1194 or earlier to 1 July 1200 or later. He probably arrived from England with Bishop Roger in the early 1190s, and was probably a son of Ralph d'Aubeney, lord of South Ingleby (Lincolnshire) and younger brother of Philip d'Aubeney. After Bishop Roger's death in July 1202, he returned to England and occurs with his putative brother witnessing an act of Roger's brother, Robert, earl of Leicester. He is later found as a canon of Lincoln on 8 July 1215 and died in such office between 1216 and November 1225.