I don't have much on the Umikers, but have a few names dates that you may recognize or need.
The first is: John Umiker b. May 25, 1800 ? in who married Elizabeth Deubelbeiss b. ? d. 1967 ...I believe both in Thalheim, Kanton Aargau, Switzerland.
Their children I have listed as:
1. Marie Umiker b. Jan 14, 1883 in Thalheim, Kantan Aargau Switzerland (taken from her papers) married Henry Matgen on Feb 5 1910..I don't know where the marriage took place...Henry Matgen was born Sept. 13, 1867 in Ober Merzig Grand Duchy Luxembourg.
They had only one child: Werner H. Henry)
Matgen, b. April 13, 1913 in Le Mars, Iowa, married Mabel Anna Clement (my paternal aunt)on Dec 24. 1941 in Dakota City, Nebraska.
Two other children of John Umiker and Elizabeth are: 2) Johnny Umiker Jr.
3) Eldon Leroy Umiker
I don't have the birth dates or any other info. If it looks like you have any info you could share on this family I would appreciate it and if you need more info on this family my Aunt Mabel is still living and I could possibly get some info on the other siblings.
I do know that Marie Umiker came to the United States in June of 1904 and sailed on a ship of French registry. I do have the original card which she had on the ship naming all the passengers and the Captain, etc.(Just have to find what box I stored it in now to find the ships name but remember it's all in French!) Also have some great pictures of some of the Umiker girls while in Switzerland if these people are of interest.