Many of the ancient (pre 1819) tartans had...and some still have...no name, they were registered by Wilsons of Bannockburn with a number.
They were all fashion tartans...some received fancy names (like Caledonia...No.4 and No.155) and some are now in use as clan tartans (like Wilson No.232, later Regent, now MacLaren)

Go check the STA Tartan Ferret and search for wilson ...you'll see what I mean...

STA

it's refreshing