How does one distinguish one's own memories from another?

this is perhaps not going to sound so fantastic, no famous life, but as the story goes i think I had a past life in Bulgaria (where I have never been). It's been few info there and few info here, but it was hard to understand.

The way I have understood it we were of the Jewish faith. The signs for this was not obvious (not to me). I wore a tichel, mirror covered (grief), sitting low, on ground (grief). We had chickens. Lived more on the countrie side.

One experience is strange. I have identified who I think was with me in that life (as too a Jew). First dream I had of this was some time before this individual was to enter my life. In it there was a game of chess.

The experience I can't place is that I first stand outside a tent and then carefully go in or barely. To me the tent is put up during war and he is in clothes of war.

(There were 2 Bulgarian wars, 1877-1878, 1885). I only said war (during regression).

Why would a female be anywhere near a tent during war and not home (where it would be more safe)? Why did he have a tent all on his own? You could stand up in the tent. I don't really see myself. My logic tells me it could not be that I would have been there. Is this his memory? But it is as if not from him, but me watching him.