Title City County State/Province/Region Country Begin Year End Year Alternate Spelling
Nickolay Bridgeville Allegheny Pennsylvania United States
Niland Fayette Pennsylvania United States 1875 1900
Niland Rowlesberg Preston West Virginia United States 1855 1890
Nizzoli Allegheny, Westmoreland PA United States 1890 1940
Nones McKeesport Allegheny Pennsylvania United States
Norris Pittsburgh Allegheny Pennsylvania United States 1887 1950
Nowicki Pittsburgh Allegheny Pennsylvania United States 1856 1927
O'Donnell Clearfield Butler Pennsylvania United States 1760 1885
O'Halloran Pittsburgh Allegheny Pennsylvania United States 1885 Halloran, Holleran
O'Hara Pittsburgh Allegheny Pennsylvania United States 1860 1950
Ogrodowski Pittsburgh Allegheny Pennsylvania United States 1880 2018
Orr Donegal Northern Ireland Ireland 1775
Orr Springfield Twsp Mercer Pennsylvania United States 1804 1887
Orr Springfield Twsp Mercer Pennsylvania United States 1832 1910
Orr Mercer Mercer Pennsylvania United States 1857 1923
Osterman Butler, Allegheny Pennsylvania United States 1820 1930 Oesterman
Oswald Pittsburgh Allegheny Pennsylvania United States 1840 2018
Overbeck Jefferson Elk Forest Pennsylvania United States 1830 1970 van Overbeck
Paden Beaver Pennsylvania 1799 1970
Painter Westmoreland, Armsrtong Pennsylvania United States 1781 1830 Penter, Bender
Palm McKeesport Allegheny Pennsylvania United States 1890 1970
Pangborn McKeesport Allegheny Pennsylvania United States 1813 1858
Parker McKean Pennsylvania United States 1800 1930
Parshall Leesburg Mercer Pennsylvania United States 1843 1916
Patten Lawrence Pennsylvania 1810 1876
Title City County State/Province/Region Country Begin Year End Year Alternate Spelling
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