Greetings Neil!
Welcome to the Clan. As Parker said we do have our own genealogist and as a member you are eligible for genealogist research time. See below for details. And don't get discouraged, those brick walls are made for breaking down.
CLAN THOM(P)SON SOCIETY
GENEALOGY POLICY
1. Members of Clan Thom(p)son Society are eligible for up to two (2) free hours of genealogist research time from our clan genealogist. Additional services are available at the discounted rate of $25/research hour.
2. Non-members can receive up to 30 minutes of free research time. If they then join the clan, they will be eligible for an additional 2 hours of free research time.
3. The research results (names, data and sources) will be emailed to the requesting individual. All data provided by the requester and any data resulting from her research will belong to Maggie Jones and will be included in her Thom(p)son database.
4. Requesting and/or using Clan Thompson Genealogy Services is authority for inclusion of family history data in the Thom( p)son data base. If you don't have email, mail your data to: Tom Thompson, 1665 Rickman, TN 38580 and he will scan/email it on to Maggie. Only those without email will receive a hard copy of any data found and that would be mailed to you.
It is our intention to marry the Scottish Parrish records with the Scottish Church sessions records (church court records) in the hope of establishing evidence of the Thomson migration from the Borders into the Lothian areas. We are requesting that all Thom(p)sons send us their family pedigree chart, with particular emphasis on your Scottish links. Maggie has extensive Scottish Parish records as well as archived Church sessions records. She plans to use these two sources to document the Thomson migration from the Borders to the Lothians. This documentation will then be sent to Lord Lyon in accordance with his recommendation in his March 2008 letter: "As you are aware, there are a number of hurdles in the way of recognition of Thomson as a name on its own. It would be interesting and helpful if it were possible to point to further references to the family in Lothian and the Borders on the record in the 16th and 17th centuries." In June he wrote "...that the evidence unearthed so far points to several unrelated families situated in different parts of Scotland. It may be the case that there was a concentration of the name in Lothian, the West March and the East March (although there is no evidence that I am aware of that the Lothian and Border families were related)."
Thanks for your help in this project.
Contact information for Maggie Jones is: thompsonclangenealogy@gmail.com