O'Leary and Walsh families

I am looking for any information about Johanna O'Leary (b. 1823 in Inchigeelagh, d. 1896 in Chicago, Cook, Illinois, USA), wife of David Walsh (b. 1815 in London, England, of Irish parents David Walsh and Catherine Hurley, b. ? in Gougane Barra, Cork, Ireland, near Inchigeelagh). Johanna's (Joanna) parents appear to be Tim O'Leary and Mary Murphy in the baptism record of the RC church in Inchigeelagh. Supposedly, she immigrated to America "as a young girl" and lived in Boston, Massachusetts, before moving to Chicago either before or after she married David Walsh about 1849.

I am also looking for information about Richard Walsh and his wife, Ellen Crowley, of Inchigeelagh, who may or may not be related to my David Walsh.

Thanks,
Nancy