[1] On his father's side, he was a descendant of Thomas Hastings who came from the East Anglia region of England to the Massachusetts Bay Colony in 1634.

Judd attended Punahou School (founded by his father), and two years of study under William DeWitt Alexander 1858–1860.

In 1873 he helped elect King Lunalilo, and served as attorney general from January 13, 1873, until February 17, 1874.

[3] He then helped elect King Kalākaua after Lunalilo's short reign.

[2] On April 4, 1872, in Geneva, New York, he married Agnes Hall Boyd (1844–1934) and they had nine children:[1] He died May 20, 1900, in Honolulu after an illness of several months.