Do you have an idea of when Michael and Margaret came to Rock Co, WI?
These Ryan's came mid 1840's - 1850, with Patrick and wife Bridget coming first. We know that one of Patrick and Bridget's sons married one of Edward's daughters, and another of Patrick and Bridget's sons married one of John's daughters. This established 2 double Ryan marriages. John and Edward were brothers. We don't know if they were related to Patrick or not.
Edward and Patrick settled in Plymouth Township, and it appears John may have been in Magnolia Twp - but we are not certain of that. Magnolia borders Plymouth on the north west side. I believe Magnolia continues up towards Evansville.
I had not heard of your Michael before this. He is definitely in the right age group to be a brother to one of these other Ryan's. Do you know what part of IRE he and Margaret came from?
We had believed up until this point, that due to the double Ryan marriages - most Ryan's in Rock Co were related in some way. There was a large family of McCarthy's in Evansville area that also came from IRE, and there is a cemetery located on the old McCarthy farm. They helped establish a Catholic church in that area, which later moved from their land in the country, into the town. But - these McCarthy's are buried in Fulton / Edgerton area. Surprising your Ryan's are buried in Janesville, Mt Olive, since there was a Catholic church in Evansville.
Do you live in or near Rock Co? Have you had a chance to review any old obits on these Ryans? The obits have been a great help in our discovering how these other Ryan's were connected. Would be interesting to see where your's fit in.