Commodore Stephen Decatur, Jr (5 January 1779 – 22 March 1820) was an American naval officer notable for his heroism in the Barbary Wars and in the War of 1812. He was the youngest man to reach the rank of captain in the history of the United States Navy, and the first American celebrated as a national military hero who had not played a role in the American Revolution.
Decatur appeared in an episode of 'The Time Tunnel', when Tony and Doug found themselves at the mercy of pirates off the Barbary coast. Decatur rescued not only them, but a young Spanish prince as well. And he gained the services of a doctor who, unbeknownst to the Commodore, had come back through the infinite corridors of Time in order to save Doug's life. (Dr. Benjamin Berkhart had been forcibly retired by the U.S. government and saw this "sacrifice" as a way to make something of his later years. It's unknown if he ever affected the timeline of Toobworld.)