Looking for Information

Looking for information regarding:

Branch 1 (father, paternal side)
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> William Henery Haggerty, Skibberreen, Cork (probably left from Cobh), arrived in Boston, 1870s. Parents Bredget Brickley and Henery Haggerty
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> he married Bridget Sullivan, also presumably from Skibberreen, who had come to Boston  in the 1870s or 1880s. Her parents were Catherine Herlihy and James Sullivan
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> Branch 2 (father, maternal side)
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> Michael McKay (Cork) to Boston, possibly in 1860s/70s.  Married Elizabeth Clark from Meath (born 1840)
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> Branch 3 (mother, maternal side)
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> Cuddyer family, from Kerry, probably emigrated in 1870s, settled in Providence
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> Sarah Cuddyer (born in US, two elder sisters were born in Ireland) married Mr. Powers, also possibly from Kerry, in Providence
>Any help would be appreciated.