I am researching surnames: COWICK, COWHICK, COHICK, COUICK

Bridget Mulcahy, born in Thurles, Tipperary about 1816, died Saint Louis after 1860. Mother of William/James, Thomas, Bridget, Nicholas, John, Catherine Sinnott. Brother of Patrick Mulcahy (born at Thurles 1825, died Saint Louis 1881; and Catherine. William/James Sinnott born in Thurles, Tipperary 1827, died Saint Louis 1884. Married Mary Canty at Saint Louis in 1854; two daughters Anne (Fredericks) and Ellen. Married Margaret Conway circa 1860: children Mary (Barrett), Bridget (Barrett), Maud (Fitzpatrick), Julia (Randle), Agnes (Aven), Sylvester, and Genevieve (Rand). Margaret Conway born in Thurles, Tipperary in 1837, died at Chicago IL in 1904. Sister of Bernard, Mary, Patrick, Walter, John, Stephen, and Julia. Many, perhaps all left Tipperary for America and lived in Chicago. Multiple spellings of Sinnott have been seen: Synott, Sennett, Senate, etc. Long term residence at 1316 Second Street in Saint Louis. Circa 1890 the Sinnott's migrated from Saint Louis to Chicago. William Barrett Grand Rapids MI