Allegheny
is the modem spelling of a Delaware word for the Allegheny
and Ohio rivers. This form is used for many features in the United
States, including the Allegheny Mountains in the eastern United
States and for a county, city, and river in Pennsylvania, while
the spelling Allegany is used for a number of features in the
state of New York. This post office was established March
25, 1893, with
William Vincamp first postmaster. The compiler has been unable
to learn why the spelling Allegany was selected rather than
the form Allegheny.