I am having difficulty searching for information about my gggrandmother, Wilhelmine ARNDT. She married Johann Carl Jacob BRANDT. I do not have birth or marriage dates. I do not know if they emigrated.

They had two daughters I am sure of, Johanna (my ggrandmother) b. 1863 and her sister Caroline b. 1865. There may be a third daughter Fredericke but she was born 1849, so I'm not sure if she's in the same family. Fredericke lived in WI and Johanna and Caroline in Iowa. Johanna & Caroline emigrated in 1884 together. I know of no other siblings at this time.

I can't seem to find anything on them. Not even at the Family History Centers. Any help would be appreciated.
Kathy Aderhold