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.
Reginald Fitzurse
Sir Reginald FitzUrse (1145 – 1173) was one of the four knights who murdered Thomas Becket in 1170. His name is derived from "Fitz", the Anglo- Norman French term meaning "son of" and urse from the Latin "ursus", meaning a bear (Anglo-Norman French: "urse"), probable "nom de guerre" of his ancestor. Although he lived before the true age of heraldry which developed in the early 13th century, his shield bore the cognizance of a bear, which is visible in a contemporary drawing portraying the murder of Becket.