Well, I corresponded extensively in the 1990s and 2000s with William Innes, who always signed himself 'William in Montreal', who was researching these same Innes families in Glenlivet, and who, until I went to the Heritage Centre in Elgin and transcribed the baptisms in the Roman Catholic parish registers from the microfilms there (this being before the RC records were added to Scotland's People), did not know that he had RC ancestors.
I also trekked up various hills to photograph various gravestones and ruins including the RC cemetery at Buiternach, Craighead and Mains of Quirn/Cairn/Kearn.
As you are asking about the identical people and places, and signing yourself 'William in Montreal' I don't think it was unreasonable to assume that you are the same person. If not, I will have to redouble my efforts to find the old correspondence!
