When you say fantasy, are the laws of nature suspended in your story? That is fantasy to me.
As for historical, I suspect the closer you are to the present, the more subjective the categorization is.
Historical, to me, indicates you take well known characters, themes, locations and events and weave fiction around them. To be labeled historical without contention, I think it has to be set 50y or more before the present.
Medieval times, vampire slayer: Historical Fantasy
Medieval times, knights fighting: Historical Fiction
1940s, vampire slayer during the Blitz : Historical Fantasy
1980s, vampire slayer: Nostalgic Fantasy