Swete and brack

• sweet and brackish: the fresh water of the River Liffey and the salt water of Dublin Bay, which merge in the river's estuary

• svet: (Russian) light

• brak: (Russian) marriage → droit of signory

• white and black → L/R split

• Finngaill and Dubhgaill: (Irish) "white foreigners" and "black foreigners" → generic names for the Norwegian and Danish settlers in Ireland