I just found a possible Maher link. I'm looking for a possible Ann Maher that married a Tully in Ireland.Do not know that husband's first name at this time. They had a daughter Bridget Tully who was born in about 1842 in Kilsker,Co Meath, Ireland
I later find Ann and Bridget in SE Iowa in 1860. By 1870, Bridget is married to a Jacob Rinearson (various spellings)
In 1880, I find Ann listed with Dennis Donahue (various spellings). This census it looks like Donnahu. They are in Louisa Co Iowa and. Listed then are daughter Mary age 22 and Ellen possibly age 19 (hard to read).
1900, I find Ann with the children in Emmet Co IA. This time there is an Edward in the household. A 1904 Directory show Ann living on Roberts street which matches the 1900 census. Edward is listed at same residence and listed as a carpenter. A 1907 Directory doesn't show Ann but shows Edward at same address and listed as a contractor.
After posting a query, someone responding telling me that Ann is buried at St. John's Cemetery Emmettsburg (apparently in Palo Alto Co Iowa) and looks like Edward is buried there too. Several Maher and Donahue's listed. I do not see Dennis listed though.