Why not just plain "Angus"? It carries no baggage, (i.e. isn't overtly anything in particular,) is personal, and the brand image can easily be manipulated by the design of the brand logo (which I think is more important to the brand name anyway.) Â I suggest something non-gimmicky: a minimalist sans serifs font, in either lowercase (my preference) or uppercase letters, either black or grey on white (white on black is sort of overdone) or tonal. Another possible name might be "Angus Garment", which has a utilitarian feel.
Angus in Australia? Maybe people overthere will associate it with Angus Young? The AC/DC guitarist? I'm interested to know what type of clothing it is, it might be a guide to what kind of name you should be looking for.