I was wondering if anyone knows anything about the surname Szumilas
Can't say that I do but when you cross reference that name on "moikrewni" page you will find that some people with that name live in Dąbrowa Tarnowska region and I have noticed that you have asked for a village name of Brzezówka which also happens to be in that region, so there's a strong probability that this might be the place you were asking for.