Watt and Murray, Fasti, 304: Roger occurs on 16 Mar. 1263 and Feb. 1264 as succentor of Moray. He may be the same as his successor, called Roger of Inverness.
Watt, Graduates, 470: Roger was Master and succentor of Moray when he appears in 1263 and 1264. He also occurs 1255x71. He is very probably the same as Roger of Nairn (Invernairn) or even Roger de Castello.