Interestingly I found this name when researching my family tree. It turns out that the name originated as Hebe, but turned into Urbe and finally to Earby (when there was little convention for spelling). My great grandmother had this name (Earby), which I don't think she liked. She was known as "Herbie" to her friends. Earby's grandmother was Urbe and her grandmother Hebe - all presumably the same name, just spelled differently. Family stories say that the name was of French origin, but I am not sure whether this is true.