I have a great grandmother, Katherine B. Sherlock who married Jeremiah Foley in Niagara Falls, NY about 1874. According to her death certificate, Katherine was born 11/15/1853 in Ballymote, County Sligo, Ireland, other documentation says Elfin, County Sligo. She immigrated to the USA around 1871. Her parents were Thomas Sherlock and Mary Haley. Katherine had a sister Mary.