I agree strongly with most of your sentiment, Mathew, I just don't hold it quite as strongly as you express it here.
Almost... but not quite! 
In my opinion you have every necessary connection to wear Granny's tartan with pride and honour and consider it your own. The clan system was designed to recruit warriors, so in most clans, either a man or woman's children were members of their clan, but the man's normally took priority. Similarly for the generations that followed. You will find that much discussed here.
Wear it! Flaunt it! Love it! Just don't over-explain it. To say "It's my family tartan" will satisfy 99.9% of the folks you'll encounter.
Last edited by Father Bill; 22nd December 14 at 07:09 PM.
Rev'd Father Bill White: Mostly retired Parish Priest & former Elementary Headmaster. Lover of God, dogs, most people, joy, tradition, humour & clarity. Legion Padre, theologian, teacher, philosopher, linguist, encourager of hearts & souls & a firm believer in dignity, decency, & duty. A proud Canadian Sinclair with solid Welsh and other heritage.
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