Dr. William Arthur "Bill" Hoesch was a Federation geologist who worked with the Daystrom Institute in the late 24th century. He was born in Long Island, New York on 20 September, 2311. (Star Trek: Pendragon) Bill married Alicia Cornell in 2360. Tecklenberg, Sinclair and Christopher Durham were present at the wedding. In 2376, Bill was conducting research aboard the SS Mount St. Helens in the Letchworth Nebula. The ship was attacked by Orions, and Hoesch and his team were left for dead. Captain Tecklenberg responded, and though he ensured the scientists' safety, he disappeared soon afterwards.