After he graduated from Harvard Law School, Ellis moved to New York and went to work for the law firm of Evarts, Choate and Beaman. He was admitted to the New York Bar in 1888,[4] but he soon moved to Denver, Colorado, and practiced law there for two years until 1890, when he moved back to New Hampshire after his father fell ill.[3] and died.[4]
In 1893 Ellis went to work as an editor of the Keene Evening Sentinel and the weekly New Hampshire Weekly Sentinel.[3] Ellis continued to be the editor of the Sentinel until two years before his death.[5]
On June 20, 1894 Ellis married Margret Louis Wheeler of Minneapolis, Minnesota.[4]
In 1910 Ellis ran for the Republican nomination for Governor of New Hampshire.[7] In the first primary election ever held in the state, Ellis lost the primary to Robert P. Bass, who would go on to become governor.[8]
^ abJournals of the Honorable Senate and House of Representatives of the State of New Hampshire. January Session, 1899., Concord, New Hampshire: New Hampshire. General Court, 1899, p. 6
^ abLegislature Elects Floyd Governor. Opening Session of the General Court on Wednesday. Bertram Ellis of Keene Chosen Speaker of the House John Scammon of Exeter President of the Senate— The First Day's Business., Nashua, New Hampshire: Nashua Telegraph, January 3, 1907, p. 2
^ abcdeThe Granite Monthly: A Magazine of Literature, History and State Progress, Volume XLII, No. 7; The Gubernatorial Canvass. Another Candidate for the Republican Nomination, Concord, New Hampshire: New Hampshire General Court, 1910, pp. 195–196
^ abcdRichard Herndon, ed. (1898), Men of Progress: Biographical Sketches and Portraits of Leaders in Business and Professional Life in and of the State of New Hampshire, Boston, Massachusetts: New England Magazine, p. 20
^"Colonel Bertram Ellis", New York Times, New York, New York, January 6, 1920
^Journals of the Honorable Senate and House of Representatives of the State of New Hampshire. January Session, 1899., Concord, New Hampshire: New Hampshire General Court, 1899, p. 12
^COL ELLIS HAS BIG RECEPTION His Campaign Opens at Nashua, N H. Candidate for Nomination for Governor Meets 700. Gathering Novel in That Part of State, Boston, Massachusetts: Boston Daily Globe, August 2, 1910, p. 5
^BASS BEATS ELLIS NEARLY TWO TO ONE, Boston, Massachusetts: Boston Daily Globe, September 7, 1910, p. 1
^Arthur Stanwood Pier, ed. (March 1, 1920), The Harvard Graduates' Magazine, Vol. XXXVIII, No. CXI, Boston, Massachusetts: The Harvard Graduates' Magazine Association, p. 544
