I am also looking for a Nova Scotia/Hartford CT connection to the McEVOY family. In my case John McEVOY, born 1842, married in Nova Scotia to Agnes Nancy HOPKINS KING.Agnes Nancy HOPKINS, born in 1844, was first married to Robert KING.They had 7 children. After Robert's death in 1871, she married John McEVOY and had 3 children.Most of the children from both marriages settled in CT, some in West Hartford. One of her children was Margaret McEVOY who was born in 1874.
I am hoping that in the few years since you posted this message you have found some answers to the family of your Joseph McEVOY and can tell me if there is any connection.