That would make sense, vervain. I've read before about memories being stored in DNA (a popular concept after the release of the Assassin Creed video games) and perhaps a collective consciousness that allows for individuals to share memories across time and vast distance.
I think in my most recent past life, I was a Confederate soldier in the American Civil War. I travled every summer with my grandparents and since I've always been intensely interested in anything having to do with that period of history, I made it a point to visit every battlefield I could. Not at all of them, but at certain ones, I had such severe deja vu that I had to find something to lean against. One instance, I was visiting the Shenandoah Valley National park. I remember hiking across one of the fields and experiencing flashes of pain in my chest and stomach. I could hear massive booms and gunfire, although it was just me and one of my sisters present in the field. There were no reenactments scheduled during the time of our visit. I was in tears by the time I reached the end of the field, and I hit my knees because the emotions rocketing through me were too intense to even think, much less stand. I honestly believe that's where I died in that life.
I'm also told that my aura is gold, and I've always visualized the color gold when working magic or centering my energy, which is an indication that my soul is very old. So I'm immensely curious about what other lives I might have led. It's fascinating to me.