This:

http://www.ebay.com/itm/Presbyterian...item43c59501a3

I did a search here and didn't come across any reference to this tartan (I searched thread titles only, there might be something buried in the 20 pages of 'presbyterian' when I searched titles and posts).

Looks like a slight variation on the typical Allen Brothers "thre stryppis vpvn ane fylde" thing, with the "ane stryp yn ye myddest" doubled in alternating "fyldes".