P. H. Ditchfield, The Cathedrals of Great Britain…
“ The little Church of St. Chad was near the well that bears his name. Another Saxon church was built by Bishop Hedda (691-721) near the present Cathedral, but this has passed away. The diocese was sub-divided at the close of the seventh century, and Hereford, Worcester, [231] Lincoln and Leicester were all separated from the Lichfield See. In the time of Offa, King of Mercia, Lichfield became an archbishopric, when Higbert was bishop, but this distinction did not last long. At the Conquest William made his chaplain, Peter, Bishop of Lichfield, who removed his seat to Chester. ”
