
From Wikipedia
He was born Willet Melbourne MacDowell in Little Washington, New Jersey (now South River, New Jersey).
MacDowell began appearing in silent films in 1917 by which time he was long a stage veteran. His co-stars were such actors as William S. Hart, Lon Chaney, Charles Ray, Enid Bennett and numerous others. Though he lived until the early 1940s, his film career ended in 1928 with the end of silent films. He returned for one sound film short in 1932, A Fool About Women with Andy Clyde and Vernon Dent.
Several films that Melbourne MacDowell appeared in survive today and can be found on DVD, particularly two of his outing with Lon Chaney, Nomads of the North and Outside the Law.

Speed Mad
1925 · as John Sanford

Confidence
1922 · as J. D. Sprowl

King Spruce
1920 · as John Barrett

The Patent Leather Pug
1925

Miss Nobody
1920 · as Red Gull

The Golden Snare
1921 · as Doug Johnson

The Lamb and the Lion
1919 · as Uncle Ben

Tyrant Fear
1918 · as James Dermot

The Rainmaker
1926 · as Bennson

Hell Hath No Fury
1917

Feel My Pulse
1928 · as Her Uncle Wilberforce

The Biggest Show on Earth
1918 · as Nat Kemp

The Wandering Two
1923

He Raised Kane
1922 · as Kane's father

Bond of Fear
1917 · as Judge McClure

The Keys of the Righteous
1918 · as Judge Michael Burke

Eve in Exile
1919 · as George Armitage

The Flaming Hour
1922 · as John Danby