That one is in my Compendium of District Tartans, but I'm at my in-laws' house for Thanksgiving, and my books are back home. So I can't give you specific names and dates. But it was created by an individual and based on the Black Watch tartan, with red and white stripes added. It was originally intended for use by the SNP, but doesn't have any political connotations today -- it's marketed and worn as a general Scottish tartan. The date 1994 sticks in my head for some reason as the date of origin for the tartan.

It's a nice looking tartan -- I had a kilt in it for a while. Looks great pleated to the white line.

Have you also considered a district tartan to represent your family's lowland origins? I don't know where in the Lowlands they are from, but there are some good tartans for Lowland regions. Roxburgh, Tweedside, Galloway, etc.

Aye,
Matt