Cornell (February 26, 1827 – November 2, 1893) was an energetic Seventh-day Adventist minister, who is best known as an early believer of the advent teaching and the Sabbath along with the Three Angels' Message, and he dedicated his life to preaching it.
He, along with Joseph Bates and Joseph H.
Waggoner, were together in the Committee going over spiritual gifts for the 1855 Seventh-Day Adventist conference at Battle Creek, which became a significant reason for accepting the prophetic gift of Ellen White.