Welcome to our group, Ben.

As you probably know, the Faas and Blythes were travelling families, based in Yetholm.

The implication is that their families were often born elsewhere, when they went off in search of work, or to attend fairs where they carried out trade in livestock, etc.

There are indeed close links with the Douglases. See: http://www.douglashistory.co.uk/history/articles/gypsies.html

For some years, I had close links with travelling showman families when they provided fairground attractions at charity events I organised.  A wonderful, generous group of people.  But no Douglases.

Yours aye,

William

Further to the generalities below, It may be that your Rachel was actually Martha at birth.  But I need to dig deeper.

In the meantime, I have stumbled across this Facebook group;  https://www.facebook.com/groups/340576175228 
look for a post by Ainsley Douglas on 17th May.

W

And digging deeper I find this, which is not directly linked (I think) to your family, but has other interesting Douglas connection in Yetholm
https://www.facebook.com/groups/340576175228/user/100003955829010 

W