Hi, The only reliable authority is the AYSHFORD TRAFALGAR ROLL which is the lifetimes work of Pam & Derek AYSHFORD who published their research into the 17000 + men who took part in the battle. Three are listed viz John MALLET age 19 from Cornwall serving on HMS SIRIUS George MALLETT age 54 from Cornwall but born Jersey serving on HMS ORION Robert MALLETT age 23 from Plymouth, Stonehouse serving on HMS CONQUEROR the son of Robert & Sarah MALLETT. Killed in action 21 October 1805. All the above is on a CD available from the RN Museum Gift Shop. Mike Waterlooville