My great geat grandmother, Nana, in the 40's I think, studied with the witnesses, but never got baptised. She quit studying, I don't know why, (not insane I suppose!)
Years later my great Aunt Toots!, a witness for 30 years, Nana's daughter, studied and became a witness, after Nana's death. Converted from Catholicism
Then years after that I studied and became a witness. My only contact with witnesses was my Aunt Toots and one time to clean the fairgrounds with heaps of other witnesses when I was about eleven in Springfield IL before a District Convention. I Converted from Catholicism
Thirteen years or so after that, my mom, who cared for my Aunt Toots until she died, studied and got baptised in 2000 or 2001, can't remember. Converted from Catholicism.
My family was deeply Catholic. My youngest brother was an alter boy and went to Catholic school. We went to Mass nearly every Sunday, and my stepdad and Mom gave generously to the Catholic Church, while raising four kids.
edited to add: I was found door to door, the initial visit lasted about an hour and I agreed to a bible study and THEN found out they were witnesses, I said to the lady at the door, who later I studied with for about two years, I said you could have told me any religion but Jehovah's Witnesses!! I already knew they did not celebrate holidays and that was about it. And my Mom made fun of her for being a JW............ha, now she is one.