Evans, son of William and Catharine (Howell), was born Jan. 6, 1827 in Llangyfelach, near Swansea, South Wales.
In 1857 he was appointed Professor of Natural Philosophy and Astronomy at Marietta College, Ohio, and filled that place until 1864.
He was the first professor appointed in Cornell University, N. Y., and from the opening of that institution, in the fall of 1868, until 1872, filled the chair of Mathematics.
He resigned on account of failing health, and after an absence of a few months at the South, returned to Ithaca, and gradually sank, until his death of consumption, May 22, 1874.
Professor Evans was a general scholar, and while excelling in mathematics, was perhaps the most thorough Celtic student in this country.