Italian inventor Guglielmo Marconi  (1874-1937)
Nobel Prize for Physics in 1909

(The above copyrighted image is reproduced here by permission:  © 2006  Jochen Wilke)

Per pale Azure and Argent, a fleur-de-lys Or between two lions
combattant counterchanged, under a  Capo d'Angio. 
(On the helm, a marquis' coronet.  No crest.)