Do you know if your CRONINs have any connection to a James or Jeremiah CRONIN who was the police chief of Lake Geneva, WI?
In the late 1870's, my ggf Cornelius MAHONEY and one of his sons "lived with relatives" named CRONIN &/or HERLIHY or HURLEY in northern IL for a few years. They were joined by my ggm Margaret REGAN and the rest of the family in about 1882, and had IL-born twins whose baptismal sponsors were named HOLIAN, BURKE, and CALLAGHAN.
Important: In Ireland, Cornelius and several of their children had been baptized in Inchigeelagh RC Church, Co. Cork.
Part of that time the MAHONEYs were in Richmond, McHenry Co.IL, but I am not sure that was the only northern IL county that they lived in.
Please contact me if you know of any connection between your CRONINs and any of the above or following surnames: HURLEY, HERLEHY, HERLIHY, REGAN, REAGAN, MAHONEY, MAHONY, O'MAHONEY, SCOTT, KILLIAN, KILRAIN, COHAN, or KEOHANE. And/or, if you have any Irish connection to Philadelphia, PA, or Walworth, Rock or Fond du Lac counties WI.
Happy to exchange info or elaborate on any of this,