Notes for John David Longfield: I have not been able to find anything on John David Longfield. Knowing that he was in Germany and Longfield is an English name it would be speculation where he was born. We know that he was in Germany in 1820 the question would have to be?
Was he born in Germany and if he was was he last name possibly a German name such as Langfeld In German lang could easily be interpreted in English as long and feld as field thus Longfield.
Were he or his ancestors born in England and then emigrated to Hesse which was one of the Germanic States. The first recorded Longfield in England Was in the County of Kent in 1317. He was John de Longfield. Which literally meant John who lived on the land which was long.
Children of John David Longfield and Justine Barenfenger are: