Before moving to Llandudno I lived on Anglesey and at that time I attended quite a few Bangor City games, particuarly enjoyed the derbies with Caernarfon. Those games were much like our Renfrewshire derbies with Bangor (at the time) holding a long unbeaten run against the "Coffis".
FYI Bangor City once famously took Napoli to a replay at Highbury (Arsenal) in their first forray into European football, losing the game 2-1 after a 3-3 aggregate draw.