John,
I don't have any information on the Hurley's.
I have a second cousin, Dennis, you may have talked to. I asked him about the St Joseph Prairie cemetery in Dubuque County. I know my most distant known ancestor is Edmund Walsh and he lived in Dubuque but I confirmed in SW Iowa. Dennis indicated
"Edmund is buried in Missouri Valley at Mount Carmel Catholic Cemetery. Back around 1990, my father Jim Walsh worked with the sexton to locate where Edmund was buried and had a a head stone placed there.
Edmund's brother Patrick Walsh is buried near the old Walsh homestead(s) in Washington township, Dubuque County. St. Joseph on the Prairie was the old country church the Walsh families attended there. The church building still stands although it has now been converted into a storage building by the farmer who purchased the land. The small cemetery sits next to it.
John V. Walsh of Dubuque is a descendant of Patrick ....."