I'm looking for information on CORNELIUS SULLIVAN, born c. 1815 in Ireland, probably Cork, who emigrated to the US in the 1830s and lived in Bangor, and his wife JOANNA (JULIA) MURPHY. Their daughter Margaret was my great-great grandmother. According to Margaret's death certificate, she was born in 1841 in Maine. In the 1850 census there is a 10-year-old Margaret Sullivan living in Bangor with the Graves family and a group of young adults from New Brunswick. In 1860 she is in Boston with the Anderson family, and in 1864 she married Richard Quirk and moved to Salem, Ma.
I wonder whether Cornelius and Patrick might be related.