I am researching the Simmons family for a relative. There are two men by the name of Robert Simmons who were both in the Royal Navy. In a previous post, PhiloNauticus outlined the career of one of them for me. Now I am looking at his father, also Robert Simmons, who was a gunner. I have a service record of the ships he sailed on. In his death notice in the Sherborne Mercury 16 November 1829, it stated that he was "the author of a very useful book on Naval Gunnery". I was just wondering if this could be "The Sea-gunner's Vade Mecum" published in 1812?