Mary Powers was a daughter of Patrick Power and Mary Sullivan.

A very informed article by Charles Radosta on Patrick says that Patrick, aged four and a half, with his sister Mary and brother Edward sailed from Castletown arriving in Boston after five weeks at sea. Mr. Radosta's article is based on notes he made from a book "FATHER POWER" by Thomas E. Kissling and published by Belvedere Press, Baltimore, Maryland in 1931. 

Castletownbear is known locally as Castletown and also as Bearhaven with its full name being Castletown-Bearhaven. We see that the 3 ton vessel, Vixen, sailed from Bearhaven carrying 89 passengers including Edward, Mary and 4 year old Patrick arriving in Boston on 29 May 1849. Edward and Mary were far short of age 24 but not uncommon for young people to give an older age in case of being refused entry. Edward stated he was a shoe maker. We see on Edward's marriage on 26 Nov 1862 that he was aged 26.

Death:

Mary Power of 3 Longhlinn Ct. died on 14 November 1883 @ Lowell, MA.  Born in Ireland to Patrick and Mary Power.

Mary Power is the last entry: