I believe I have an answer to your query.
I have a WILLIAM J. COGHLAN b.1871 in Keokuk county,Iowa. His parents were JAMES W. COGHLAN(b.1842 in Warren county, Ohio)and his wife ELIZABETH WALTZ(b. 1848 in Indiana)
On 15 September 1887, he married one JANE CONNOR (b.1841 in Scotland)
I don't know about children but can look it
up at FHC here in Salt Lake City. This looks like a good possibility since Hiteman, Iowa is only 40 miles from where he was born.
Hope this helps you out.