Does the Catholic church keep permanent records of it's priests?  
I have hit a dead end with one particular line (Reid), but have found that my ancestor's uncle was a catholic priest in Kempcairn, Banffshire, Scotland (congregation is now St Thomas's Church, Keith), from 1783 until his death in 1825.  His name was Reverend William Reid.  I have found his will on Scotland's People but it does not add to the information I already have from other sources.   I wondered whether there might be any clerical records which give a clue to his family or geographical origins etc.  I do not know if he actually came from Scotland.