It seems we know a fair amount about Roman and Greek views on homosexuality but do we know anything about how the peoples inhabiting Northern Europe felt about it? Do we know if any of them openly practised it? Condoned it? Hated it? Do we know of a gay chieftain or famous gay warrior?
This answer written by /u/sunagainstgold might be of some help, it isnt at the exact time frame you're looking for, but this is the way of things when talking about pre-literate societies