William de Lamberton, sometimes modernized as William Lamberton, was Bishop of St Andrews from 1297 until his death. Lamberton is renowned for his influential role during the Scottish Wars of Independence. He campaigned for the national cause under William Wallace and later Robert the Bruce. As Bishop of St Andrews, the most powerful seat in Scotland, Bishop Lamberton along with Bishop Robert Wishart of Glasgow conducted the coronation of Robert the Bruce as King Robert I. Lamberton would go on to have a vital role in the formulation of the Declaration of the Clergy 1310 and the Declaration of Arbroath which would lead to Scottish Independence.

Robert Wishart was Bishop of Glasgow during the Wars of Scottish Independence and a leading supporter of Sir William Wallace and King Robert Bruce. For Wishart and many of his fellow churchmen, the freedom of Scotland and the freedom of the Scottish church were one and the same thing. His support for the national cause was to be of crucial importance at some critical times.