Jody, I have received some letters from Isca's They said that all the Isca's are related.That about 3 Isca families came over from Sicily and our family crest is registered in Messina.He also said there is a fort Isca in Wales.It was left from the Roman occupation of the British Isles.He said next summers he is taking a trip to Wales and will do some research.Some of the Isca's went to Michigan,New York and somewhere else.I can't remember.Both men that have written are very nice and may be able to help you.