John O'Hearn of Maple Grove born 1822, County Kilkenny, Ireland, son of Daniel O'Hearn of Kilkenny.
Listed on property deed as John O. Haran together with James O'Haran. They may be brothers. John O'Harren and James O'Harren listed in 1850 federal census for Manitowoc, Wisconsin. Property in Manitowoc Rapids also listed for James O'Harran in county records.
John (O'Haren on marriage certificate) married Catherine Fenlon, daughter of Owen Finlan and Mary nee Murphy of Maple Grove, from Borris, County Carlow, Ireland.