Mr. Arney. It just may be that the mystery of Jacob Arney's origins is not solvable. Obviously time and effort alone will not solve this problem if no data exists to be found. As you know the early records are quite fragmentary. It is not a given that a list of Jacob and Anna Usula Arney's children actually exists just waiting to be found.
There is a possibility that at some future date someone will stumble across a clue that will help solve the mystery, i.e. a happy accident.