I first heard of this notion through some family folklore. I didn't think much of it. Until now.
Now. Years later, I came across a podcast on YouTube featuring a couple who has collected anecdotal testimony affirming the folklore.
Prebirth experience with Elizabeth and Neil Carman, Ph.D.
Their website. Their book.
Whereas I was ready to throw this onto the BS pile on first hearing, I did have to consider it strange that a view that came out of the first half of the 20th century in family folklore belief was seemingly confirmed in testimony compiled by a couple of researchers in the recent past.
This is just one of the things which begs questions as to the nature of this belief.
I don't have an answer (yet) but if I did indeed choose this family and this life as it has unfolded (refolded, spindled & mutilated, etc)...there better be one helluva big life circumstance change coming: in a mega huge improvement of ALL things way.