In addition to the already mentioned Normanomicon, I'll add Sam and Max as character names as their own Easter Egg in reference to the comics/PC games.
Also, for those of you as ancient as I am, one of the headstones in BGY reads something like "You are splashed by acid from the acid blob. Your mace corrodes!" , a reference to the text-based RPG 'nethack' aka Rogue.
Most of the tombstones in BGY for that matter are puns or EE's, such as the one where a Mr Atkins was 'unbalanced' (an Atkins Diet reference?) and others are just outright funny such as in-game novellist Meredith Sock's, which reads something like "Meredith Sock. You suck."
BTW. The in-game inhabitants of Albion speak English, last I checked -- which particular dialect of British English (or Scots for ye Gargoyles) can be determined by others with more time than I.