John Fitzgerald - Miller in Croom late 1800[s

Looking for information on John Fitzgerald, son of Mary Long and Michael Fitzgerald of Croom. Baptized at St Mary's 10 Apr 1855. John had 4 sisters Mary, Margaret, Catherine and Bridget. All 4 went to New York in the late 1880's. It is said that John became a miller and I believe he stayed in Croom or other places in county Limerick.