There are two male Cassie's in San Diego California. Their father's name was Leslie. His father emmigrated to Calf from Scotland. I believe that he (the grandfather) was my father's uncle.

I expect that you could get the co-ordinates of the San Diego Cassie's on the internet. When I was there in 1999 I looked up the name in the phone book and there were some listings. It is not exactly a common name.

Ian