My connection would be through Maria Herz (presumably daughter of Herz) said to be born 1750 in Trier. I'll revisit what info I have on her. Roos thought assuming she was born in Trier the only possibility was that she was the daughter of Herz Levy (Mehring) and Bissel Moses. Did your Herz son of Solomon and Eligen Moses ever live in Trier? It looks like he had a wife who died there.