Born in Claremont, New Hampshire, to William H. and Ellen (Joslin) Allen, he received an undergraduate degree from Dartmouth College in 1894, and a law degree from Harvard Law School in 1898.
He "served as an instructor of Dartmouth college, [and] as Judge of the probate court for Cheshire county".
Allen served as "associate justice of the Supreme court, and as chief Justice from 1934 until 1943",[1] In 1935, Allen was also president of the New Hampshire Bar Association.
[1] Following the death of Allen's wife Amy in 1951, Dartmouth College received a $125,000 bequest from a trust he had established.
This biography of a state judge in New Hampshire is a stub.