There are only two streets in Carrigaholt and neither of them has ever been called Michane St.
The only similar names that come to mind are those of two Parish Priests of Carrigaholt - Fr. Malachy Duggan, who died of cholera in 1849, contracted from his parishioners during the Famine; and Fr. Michael O'Donoghue, who served from 1880 to 1886. Either or both of them may be among the priests buried in the church in Carrigaholt, to whom various inscriptions were covered up when the church was carpeted in recent decades!