Hi! We have John Elvert in our family. He was married to Amelia Mummsen and he came to the USA sometime after 1891. They had the following children: Max Henry was born in Germany on 3/17/1891. John Elvert, Bertha Elvert born 2/1/1894, Christine Elvert who married Boetger. Carl Elvert, born 4/5/1901 in Iowa and died 2/86 in Washington. Theodore Elvert born 12/25/1896 in Iowa. He died AUgust 1984 in California. My son is the great grandson of Max. This might help. Contact me at
spn@gte.net. Hope we have a match.