My great-grandaunt Adelheid Viebrock, born Oct. 22, 1837 in Plönjeshausen, Hanover, Germany. She arrived in NYC on the ship: ATLANTIC on Nov. 2, 1865. She married after she landed in America but unfortunately her married name is not known to me. She most likely settled in Minnesota, USA. Any information, suggestions for further searches, etc. would be appreciated.