Other appropriate tartans for a Presbyterian Church:

St. Columba
Holyrood
St. Andrew's

Douglas -- in honour of the Cameronian Regiment, originally raised from Covenanting Presbyterians
Hamilton -- in honour of Scottish Protestant martyr Patrick Hamilton
Ulster -- in honour of the Ulster-Scots, many of whom were Presbyterians

Yours aye,

Todd*

*who was born & raised Presbyterian, from a long line of Presbyterians, but who is now an Episcopalian.