Given my last name (Ua Muirchertaig), I’m from the bottom left hand of
this map.

Given my previous persona story, coupled with my general choice of clothes and jewelry, we’re near a Viking settlement (actually, given 12th century, an established Viking town).

That puts us in or near Cork. Probably to the west of Cork somewhere, directly west. We’d be southwest of Limerick, but Cork is closer.

Here’s another map.