John B. D. Cogswell
50th President of the Massachusetts Senate
In office January 3, 1877 – January 7, 1880
Preceded by	George B. Loring
Succeeded by	Robert R. Bishop
Member of the Massachusetts Senate from the Cape district
In office January 3, 1877 – January 7, 1880
Preceded by	Jonathan Higgins
Succeeded by	Samuel Snow
Member of the Massachusetts House of Representatives from the Barnstable 1st district
In office January 4, 1871 – January 7, 1874 Serving with Henry Goodspeed (1871), Ezra Howard (1871 & 1872), Nathaniel Sears (1872 & 1873), and Philip H. Robinson (1873)
Preceded by	Francis A. Nye, Henry Goodspeed, and Warren Marchant
Succeeded by	Levi L. Goodspeed, Philip H. Robinson, and Joshua C. Robinson
United States Attorney for the District of Wisconsin
In office 1861–1866
Appointed by	Abraham Lincoln
Preceded by	Don A. J. Upham
Succeeded by	Charles M. Webb (Western Dist. of Wisconsin) Levi Hubbell (Eastern Dist. of Wisconsin)
Member of the Massachusetts House of Representatives from the Worcester district
In office January 7, 1857 – January 6, 1858 Serving with William T. Merrifield, Dexter F. Parker, George F. Thompson, and Stephen P. Twiss
Preceded by	Harrison Bliss, Elijah B. Stoddard, Putnam W. Taft, George W. Russell, and John H. Brooks
Succeeded by	Albert L. Benchley, Dexter F. Parker, Alexander Thayer, and James S. Woolworth
Personal details
Born	John Bear Doane Cogswell (1829-06-06)June 6, 1829[1] Yarmouth, Massachusetts[1]
Died	June 11, 1889(1889-06-11) (aged 60)[1] Haverhill, Massachusetts[1]
Resting place	Ancient Cemetery Yarmouth Port, Massachusetts
Political party	Republican
Spouse	Mary Abbot Trumbull ​ ​ (m. 1858⁠–⁠1889)​
Children	Mary Louisa Trumbull (Roberts) (b. 1861; died 1955)
Alma mater	Phillips Academy[1] Dartmouth College, A.B., 1850 Harvard Law School, LL.B., 1852
Profession	Lawyer, author[1]

John Bear Doane Cogswell (June 6, 1829 – June 11, 1889) was an American lawyer and Republican politician from the U.S. state of Massachusetts. He was President of the Massachusetts Senate for the 1877, 1878, and 1879 sessions, and was United States Attorney for the District of Wisconsin during the presidency of Abraham Lincoln. He was the last U.S. Attorney for Wisconsin before its division into Western and Eastern districts.^[1][2]

In 1847, while at Dartmouth College he became a member of Zeta chapter of Psi Upsilon fraternity.^[3] In 1852, he was awarded the LL B. from Harvard Law School.^[4]

• 1872 Massachusetts legislature
• 1873 Massachusetts legislature
• 1877 Massachusetts legislature
• 1878 Massachusetts legislature
• 1879 Massachusetts legislature

• Jameson, E. O.,: The Cogswell in America, (Boston: Alfred Mudge & Son, 1884), p. 358;
• Dartmouth College ... 1769-1940 (Hanover, N.H., 1940), p. 162.

• Biography of Cogswell at the American Antiquarian Society Manuscript Collection
• Massachusetts State Representatives George Washington Clark, John Bear Doane Cogswell, Robert Couch, Benjamin Franklin Hayes, Barney Hull, Liberty Dodge Packard, Henry Splaine, Francis Dana Stedman, Eliphalet Loring Thayer, Hugh James Toland, Tisdale Sanford White, Ezra Dyer Winslow.