Background
Maguire, John Macarthur was born on October 9, 1888 in Denver, Colorado, United States. Son of William Miguel and Emily Mallet-Prevost (MacArthur) Maguire.
Maguire, John Macarthur was born on October 9, 1888 in Denver, Colorado, United States. Son of William Miguel and Emily Mallet-Prevost (MacArthur) Maguire.
Bachelor of Arts, Colorado College, 1908, Doctor of Laws, 1949. Bachelor of Laws, Harvard, 1911.
Admitted to Massachusetts bar 1911. With firm Hale & Grinnell, Boston, 1911-1916. Partner Hale, Grinnell & Swaim, 1916-1917.
Member war emergency division Department of Justice, Washington, 1917-1919.
Partner Hale & Dorr, Boston, 1919-1923, counsel, 1957-1973. Professor of law Harvard, 1923-1957, Royall professor of law, 1950-1957, Royall professor emeritus.
Consultant expert, United States Treasury Department, 1938, 1943. Assistant reporter American Law Institute Code Evidence, 1939-1942.
Consultant American Law Institute Federal Income Tax Statute, 1949-1954.
Member American, Massachusetts, Boston bar association, Phi Beta Kappa. Clubs: Faculty.
Married Mary Ballantine Hume, June 22, 1923. Children: Catherine Hume (Mistress Edward Henry Cumpston, Junior.