AN UPDATE/SUMMARY RE POSSIBLE PLs
Every so often, it is time to "take stock" and evaluate where things stand in terms of PL research. My possible PL "hits" are limited, but I recently added one--a medieval nun--based on (what is for me a rarity) a somewhat successful Youtube regression:
The nun regression was brief--It was a typical format, a period of relaxation, etc.--followed by short specific queries (answered below). I was trying to fix myself on something during the Cathar period (which is of great interest to me), but missed by a century or so. My first "look down"/"what do you see" query from the Youtube regression video showed me a lap covered in some sort of coarse brown fabric--I was sitting and couldn't see my feet. The room seemed dark, but that was mainly in contrast with the outside, which was bright and vibrantly green with foliage, making the interior hard to see. (This is what I was seeing through an open door, which seems to have been the only light source in the room). In terms of age--35. I was a nun. I had a vision of kitchen work as "what I did". My most important day seemed to take place in an open field "where I heard the word of God"--I assume this is what led me to take the habit. The most important person I identified as "sister", who I saw as a young woman with a pretty face. (I assume this was my sister by family relationship, not by virtue of being a fellow nun). In terms of who she was in my present life, a third or fourth cousin who is 10 years older and who I have always liked popped into my head, but I'm just not sure on that one. The year that came up when asked was 1362--very clearly. My darkest time did not come up clearly--It seemed to be a darkened environment, possibly a town square, but there was no one being burned at a stake or etc. The video did not (to my recall) take me to my death, but I have an impression that this was a fairly happy and contented life. Via further historical research, the time period and brown habit would match-up pretty well with the "Poor Claire" nuns of that era, as well as with the fact that the Franciscans preached in open fields--which seemingly led to me hearing "the word of God" and becoming a nun. I am not surprised by this revelation, and actually feel relatively comfortable with the idea of this putative PL.
So, with this new addition, where do I stand? First, all of my discoveries are tentative and provisional. I would not guarantee any of them, but neither would I dismiss them, and some are stronger than others. Second, all are derived from some combination of two or more of: (1) regression tidbits + (2) meditative glimpses + (3) intense "feelings" + (4) trying to follow these hints through further research, often guided more by intuition than logic. So, starting with the most recent and moving backward in time, my putative PLs are--
(1) A German-Brazilian girl--i.e., a girl with Germanic heritage from Brazil, unknown name, from the large population of German (and probably Nazi) emigres in Brazil prior to WWII. I have strong associations with the idea of an airship trip (which would probably have been from Brazil to Germany in the relevant period), and some snippet memories / impressions (previously reported) of wandering as a terrified young female trying to survive in the (bombed out?) ruins of a city, which I assume was Berlin or another German city at the end of WWII, and eventually being killed by bayonet--probable death via invading Russian soldiers (c. 1945). BTW, this would be less than a decade before my birth.
(2) A niece of Madam Blavatsky--Vera Johnston. She can be found online, though she is not really an FPL, she just happens to be associated with Blavatsky (who was a famous person) and married one of her principle supporters in the Theosophy movement (Charles Johnston). This came as a result of one of my first attempts at a regression and was very strong as compared to most things received since then. (Died c. 1920)
(3) A medieval nun, as just reported. I was trying to fix myself on something during the Cathar period (which is of great interest to me), but missed by a century or so. (c. 1362)
(4) Possibly oldest is a palace slave in the middle-east, probably early in the Islamic era. (which I have posted). I have very little on this one, and timing is indeterminate.
However, I also have very strong reactions to a couple of other historic female figures. I find things of this type to be interesting and possibly indicative of a PL connection. The two figures are Julie d'Aubigny, an opera singer and adventuress (1673-1707); and French painter Louise Vigee Le Brun (1755-1842). I am not sure when I came across d'Aubigny ("La Maupin"), but it was after joining the board, and I immediately had a very strong sense of chagrin and painful embarrassment in relation to her, which became more intense with the thought that I might have been her. This happened every time I thought of her for quite a while, but gradually wore off. At this point, I would have no problem being her, but it was an interesting reaction to someone I had never heard of before. However, it is probably more likely that I was a relative or associate. The other is the famous French painter, Louise Vigee Le Brun. Once again, though I certainly wouldn't mind claiming such a life, I think I was more likely her daughter, an admirer, client, or someone else associated with her (if there is any connection at all).
S&S
PS--Lady Ann Conway (1631-1679) is also a person of interest, but probably no more than that. I have some thought that I may have been one of her admirers or associates, etc.--and she had many. But that is all.
It is remarkable to me that all other responses centered on refuting the possibility that there could even be valid results using this method, gave a blanket denunciation based on something they didn't like in their report, and/or both. I find this to be a fairly interesting "statistic" without anything else included. I am tempted to insert a quote from Shakespeare, but don't honestly have enough data for an observation of that type. Also, it would be very un-typical for most. Still . . . . 
Congratulations!
But the board goes on. 