Hi Mary
The following info is all I have on Theresa (Rosa) Dahler

Born: February 26, 1848-9
Married: James Bever on December 25, 1870
Died: February 19, 1891 in Will Co., IL

Let me know if we fit in anywhere with your Dahlers. We would be interested in any info on her parents. We have a possibility of Sarah being her mom. Thanks