Annie, yes, we spent three weeks in Ireland in October 2007 and I found the actual church where William and Margaret were married and got to see the original records. I also was able to find Margaret's death date which I did not know before. I also was able to find both sets of parents for them as well as some of the other family members. I was unable to find the death of William or where either of them were buried.
What is the RCB Library? I was told to go to the repository in south Dublin for the Church of Ireland records but it was too late in the day to go unfortunately. Hopefully I will be able to make another trip some day!
I was able to talk with a gentleman in Co Monaghan who knew everything about the genealogy of the county and was able to learn several things from him. He assured me that the Fergusons originally came from Scotland during the Cromwellian period in the 1600s and were basically farmers. In fact, one of my ancestors was the inventor of the farming equipment that became part of Massey-Ferguson farm implements that are still available today.
My cousin in California has looked at the 1796 Flax and Spinning Wheel census but because we didn't have any names, she was unable to connect the right people to our family. Now we have something to work with.
I appreciate the information and hope to be able to trace my family even further back plus return to Ireland sometime soon. It is a beautiful country with friendly, helpful people. Are you from Ireland or the US?