My Grandfather Abraham Kempler (on my mother, Evelyn's side) also gave me the same information--that we were a small family and that every time you see a Kempler it's a relative.
My Grandfather was born to Shmuel & Gittel(nee Weiner)Kempler in a small town (I don't have the name & it's probably non existent now)in Poland's Galicia section. He had the following siblings: Mollie, Ida, Anna & Phillip.
Before I go further, let me know if any of this rings a bell with your search. By the way, I live in NJ--where are you? I came across your name through an internet search engine as I am trying to locate 2 1st cousins, Karen & Jennifer, who I've never met but who were brought up in California.