proctor-beauchamp was the fourth son of sir thomas william brograve proctor-beauchamp, 4th baronet, and his wife the hon. catherine esther, daughter of granville waldegrave, 2nd baron radstock. he was educated at repton and trinity college, cambridge. proctor-beauchamp was one of the cambridge seven, students from cambridge university, who in 1885 decided to become missionaries in china. he served with the china inland mission during the late qing dynasty in china. he was evacuated from china during the boxer rising in 1900, but was back in china again from 1902 to 1911.