There was, anciently, a parish called Dundurcas, which lay on either side of the River Spey. In 1788, it was "suppressed", and that part of its territory which lay on the east bank of the River Spey was divided between the parishes of Boharm and Rothes. The major part, which was deemed to lie in the county of Moray, was transferred to Boharm. On 1st May 1891, this area was transferred to Banffshire.
The implications of this anomaly vary for different archives, and different periods of time. The whole of the more recent OPRs, and the civil records of Births, Deaths and Marriages for the parish of Boharm are now catalogued under Banffshire. However, if you can trace ancestors in the affected area back before 1788, then they are likely to be found in the OPRs for the parish of Rothes, Moray, which fell heir to the records for the suppressed parish of Dundurcas. Up to and including the 1891 Census, Boharm (including the Banffshire portions) will be found on the Census films for Moray. From 1901, it is on the Banffshire films.
The place affected are: Auchroisk, Backshalloch, Balnabriech, Bauds, Blackfolds, Blackhillock, Boharm, Burghnamary, Cairnty, Mains of Cairnty, Easterton of Cairnty, Newtack of Cairnty, Woodhead of Cairnty, Clachnayell, Clachwarren, Clockenwells, Craigbeg, Craighead, Culfoldie, Cullieshangan, Cummingston, Delfur, Drakenmyres, Lower Drakenmyres, Forgie, Moor of Forgie, Newton of Forgie, Garlands, Goodgrain, Gorlieach, Holl, Janetsleys, Jock's Lodge, Kirkton, Knoweheads, Lachdhu, Lochdhu, Malcolmsburn, Marchbraes, Midtown, Moorfield, Mountfoot, Mulben, Mains of Mulben, Upper Mulben, Parkfoot, Rosarie Gates, Shalloch, Shandstown, Soundmoor, Lower Soundmoor, Upper Soundmoor, Starryhowe, Stonytown, Lower Strypeside, Tam, Walkerstrough, Whitehillock