Great article, Rob, but this part:
Name: 338px-Edward_Pellew,_1st_Viscount_Exmouth_by_James_Northcote.jpg Views: 2974 Size: 22.5 KB
Sir Edward Pellew, wearing a captain's dress jacket with late 18th century style epaulettes.
You can easily see that it's the admiral Pellew on the laced buttonholes and the gray hair. But you may comment that he became an admiral when cut away jackets were the thing and that could be said but admirals kept the sweeping front longer.