William St. Clair, 6th Baron of Roslin
William St. Clair, 6th Baron of Roslin (died 1297) was a Scottish nobleman of the late 13th century. Origins According to Roland Saint-Clair, writing in the late 19th century, the "best" theory as to the origin of William St. Clair, is that found in the Genealogie of the Sainteclaires of Rosslyn manuscript which was written in 1690 by Father Richard Augustine Hay (1661 – 1736). According to this manuscript, William St. Clair, was the second son of Robert de Saint-Clair in Normandy who had married Eleoner who, in turn, was the relict of Hugh, Lord of Chateauneuf, and daughter of Robert II, Count of Dreux in France, by Yolande de Coucy. Roland Saint-Clair also stated that Van Bassan's History of the St. Clairs is "considerably at variance with contemporary annals". The Oxford Dictionary of National Biography and People of Medieval Scotland do not support the parentage of William, stating that William was the son of another William, and the previous holders of Roslin, were unrelated to the St. Clairs. Sheriffdoms According to Bernard Burke, William St. Clair, was made sheriff of the County of Edinburgh for life in 1271, and this date was also given by historian Will Grant. However,