My dad was Bernhard Frederich Kelling,born 1886, died 1972. He was raised in Iowa. His father was Hans Kelling, believed to have been from Mecklenburg; he is supposed to have beeb a cavalryman, a retired soldier before he came to Iowa.
Does "Freidrich" have an additional name? Did he ever live in Butte, Montana? Is the year of death precise?