Reginald Fessenden
Reginald Aubrey Fessenden (October 6, 1866 – July 22, 1932) was a Canadian-born inventor, who did a majority of his work in the United States and also claimed U.S. citizenship through his American-born father. During his life he received hundreds of patents in various fields, most notably ones related to radio and sonar.
Francis Fessenden
Francis Fessenden was born in Portland, Maine, in the spring of 1839. He was the son of U.S. Senator William P. Fessenden and a brother of James Deering Fessenden, who would also serve as a general in the Union army. Another brother, Samuel, would be killed at the Second Battle of Manassas during the war. Two uncles, Samuel C. Fessenden and T. A. D. Fessenden were U.S. Congressmen.