Lots and lots of items in Highland Dress have regional names. Sometimes they have historical reasons behind them, but more than often it's just a name given to the style for marketing reasons.

One example is the Kilmarnock Bonnet. Kilmarnock was once the bonnet making capital of Scotland, so the name makes sense.

But most of these other examples have no such rationale.

Argyle jackets
Inverness capes
Balmoral bonnets
Glengarry bonnets
Argyle kilt hose
Sheriffmuir doublet
Montrose doublet
Crail jacket
Braemar jacket

Some more recent examples I have seen in catalogs:
Culloden shirt
Glen Urquhart sgian dubh