Final answer:
The historical texts provided do not directly mention the name of King Edwin's chief advisor or priest. Paulinus, as the first Bishop of York during Edwin's reign, could be considered a key religious figure and advisor. While not directly named as the chief advisor or priest, his significant role in the conversion of Edwin to Christianity suggests his influence was noteworthy.
Step-by-step explanation:
King Edwin's chief advisor or priest is not explicitly mentioned in the historical texts provided. However, if we refer to the historical context of King Edwin of Northumbria, a significant figure during his reign was Paulinus, who was a Roman missionary and the first Bishop of York. While not directly referred to as the king's chief advisor or priest in the context of the question, Paulinus played a crucial role in the conversion of Edwin to Christianity and could be considered a principal religious advisor.
The information offered from the Eadwine Psalter and other sources does not directly state the name of King Edwin's chief advisor or priest, but it provides insights into religious and political figures of the time, such as bishops and their influence on kings and the ruling elite. The role of such figures often extended beyond religious duties, overlapping with political counsel and guidance.