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The record that I found on FamilySearch.org quoting Scotland Marriages 1561-1910 does indeed list Thomas Ferguson as the father of Jean Ferguson who married James Proctor.

My handwritten document came from a family member who was related to a GG Aunt who had it. She died in 1888 (at age 30) so I can't get back to that source. It is called the 'Campbell' record and lists about 25-40 people, family that I have found in census records via FamilySearch and Ancestry.com. The record has been correct in every one that I have been able to find. Not perfect but usually if it is off it is a 2 March compared to a 24 March type error. The Campbell record does list the marriage of James Proctor and Jane Fergusson as 30 July 1776 not the 20 July 1776 found on Scotland Marriages.
The earliest record I have from England Records numerous members of the family living in Newcastle Upon Tyne about 1839 so there is a hole from the records I can find in the 1740's to 1839. I have several records in the Newcastle/ Gateshead area that match the Campbell record.
But my most recent question had to do with Thomas Ferguson and the birth of Jane in the 1750 range and her marriage in 1776 and children born starting about 1777. That search brought about the numerous Thomas which prompted my original question. And I will heed the advise to give up trying to figure out the Clans more than just knowing they were there. Thanks for the response

Thank you for the reply and links.
The creator of the report is unknown but the family that held it was of my Great Grandfather's family. It could be one of two women in that family based on the handwriting. Both were deceased before 1935. I have used that report and searched on census and other sources at the State Historical Society of Wisconsin. I found many members and families listed and all data I find is the same as what is on the handwritten report.

I have used the data to obtain certified records from the General Register Office in London that match the information on the report from my family member. From that experience I believe the report to be pretty good records. I do understand the problem of false data which is why I hesitate to say my data is true but at this time I trust it to be pretty close to factual.

I found the record of my "earliest Ancestor' James on ScotlandsPeople.uk so I believe that and the fact that my data and the online data both cite the same date, 5 Sept 1742, one as Birth (on my record) and one as Christening (on ScotlandsPeople) leads me to think this 'might' be family. I am looking for other proof and any data to the contrary will be considered.

I will continue to search and at this time am 'considering' a trip to see my adopted homeland. I do appreciate your comments about Edinburgh and will put them in my travel folder. I thank you for the sources and will use them.