outhouse
Atheistically
Q is patently Galilean and predates Mark by 30 years. Yes, Luke is Gentile. Matthew is Jewish, writing to an expatriate Jewish community.
I think Q is Galilean, because the outlying, more rural areas were far more suspicious of the Roman "Big Brother" than the urbanites were. Q is so suspicious. The remaining L and M material are not.
ill need sources for a Galilean connection, i dont even know whwere got that, being that most scholars view it as redacted from a greek source