Thomas Sinclair, Dictionary of National Biography… (1885)
“ BALTRODDI, WALTER de (d. 1270) , bishop of Caithness, succeeded Bishop William in 1261. He was doctor of the canon law, and his diocese included Caithness and Sutherland, the chapter consisting of ten canons, comprehending dean, precentor, chancellor, and treasurer. By the constitution created by one of his predecessors, the eminent prelate Gilbert Murray, he as bishop held the foremost position in chapter as well as in diocese. Thurso was the seat of the bishopric of Caithness in Bishop Walter's time, although it had been temporarily removed to Dornoch between 1222 and 1245. ”
