Thanks for your reply. I thought it was likely that the name was originally Norman, and your information confirms this. It looks as if they may have a long history of residence in north Antrim, from Norman times on. I think possibly they might have been one of the Anglo-Norman families who took on Gaelic ways or at least used Gaelic/Irish naming patterns in the generations immediately preceding the Reformation, and who then became Protestant. Certainly there are a couple of McRichards in the area, in early records; in 1641 there was a Brian McRichard holding land in Ballyrashane.