> The term 'Frauen Ferein" is also mentioned many times - I think German for Women's Assocation.
It should be Frauen "Verein" and that's exactly what it was--a Womens Society--most likely through her church. Along those lines (no pun intended!) it would appear from the surnames that these were Old Lutherans. I could be wrong or overstepping the profile but I know that some of those surnames have strong ties to the Pommeranian Old Lutherans, especially Ladwig, Zimmerman(n), Quandt, and Bartelt.
While I do not specifically remember an Old Lutheran parish in Kewaskum, it would make sense that there was one as they began in southern Washington (Freistadt) and successively kept going further north with time. Some if this was due to land and some of it because of differences in religious doctine, but it definitely did occur. The closest parishes I could remember in that area were located near Lomira and Theresa. Not too far by today's standards, but way too far if you're going to church on a buckboard in January, with or without a load of small children and infants.
> Although I was told my family lived in Fond du Lac County, I see that Kewaskum (they had farms near there) is actually in Washington County?
Kewaskum is on the northern border of Washington County, but it most probably wouldn't have been uncommon for them to hop the train and do their business in the much larger Fond du Lac, rather than the closer but much smaller West Bend. West Bend was too close to Milwaukee at that time to grow very large.
I grew up less than 20 miles from Kewaskum and we always went to Fond du Lac for clothes buying, etc. In that immediate area, Fond du Lac is considered the closest "big" city. Additionally, it could also have been that many of their friends and relatives lived in FdL.