Map of Scottish bishoprics in the reign of David I (reigned 1124 – 1153)
<a href="https://en.wikipedia.org/wiki/William_Forbes_Skene" class="extiw" title="w:William Forbes Skene">William Forbes Skene</a>
Celtic Scotland: A History of Ancient Alban (Church and Culture), Vol. II, Second Ed., following page 418<br>* <a rel="nofollow" class="external free" href="https://books.google.com/books?id=oJoQAAAAYAAJ&amp;pg=PA418">https://books.google.com/books?id=oJoQAAAAYAAJ&amp;pg=PA418</a>