Aldrich was born in Rhode Island in 1885, the son of U.S. Senator from Rhode Island, Nelson W. Aldrich and the former Abigail Pearce Truman Chapman.
 He attended Harvard University, receiving a bachelor's degree in 1907 and a J.D. degree in 1910.
 Among his ten siblings was brother Richard S. Aldrich, who served in Congress from 1923 to 1933, and sisters Lucy Aldrich, an art collector, and Abby Aldrich, who became the wife of John D. Rockefeller, Jr.
Aldrich was born in Rhode Island in 1885, the son of U.S. Senator from Rhode Island, Nelson W. Aldrich and the former Abigail Pearce Truman Chapman.  He attended Harvard University, receiving a bachelor's degree in 1907 and a J.D. degree in 1910.  Among his ten siblings was brother Richard S. Aldrich, who served in Congress from 1923 to 1933, and sisters Lucy Aldrich, an art collector, and Abby Aldrich, who became the wife of John D. Rockefeller, Jr.
Winthrop W. Aldrich