The Robert I. Moellers of Indianapolis, IN

I am researching the MOELLER family from Metzebach, Germany.
Justus Moeller (Möller) who was married to Anna SCHMIDT is the earliest found. They had Martin Moeller (Möller) who was born 1822 and died 1889 at Obergude, Germany. I have no dates for Justus or Anna Schmidt.
In addition, I'm researching the Wilhelm Frederick DIECKMEYER family of Oynhausen, Germany. He married Amanda WIEGAND at Hilter, Germany. They came to USA around 1820. They had three children, George Henry, Frederick Wilhelm and Adelheide.
There is also Josef GROF family I am researching. He married Viktoria JÜNGLING. They had Josef born 4 September 1825 died 19 October 1875 Bukovina near Nova Paka, Bohemia, now the Czech Republic. Any information would be appreciated. I am also willing to share the information I have.