Gorge hooks have been used for many many centuries. The one version is pictured, the other has a groove carved around the center where you tie your line on - instead of through the hole. Size them up and down depending upon your bait and the size fish you want to catch. The fish literally swallows your "hook", and when you pull the line, the points swing out to the side and catch/lodge in the fish's throat/mouth. You quite often have to cut it out to retrieve it.
Most iron/steel hooks were made from pre-made wire by people/companies that specifically manufactured them. Most were not crude, but fairly well finished. The flaired end hooks were popular during the 17th and 18th centuries, but hooks with eyes also existed. Hooks with eyes go all the way back through the Viking era and on back to Roman and Celtic times. Many Copper Culture hooks in North America had a version of an eye on them. A number of modern single fish hooks are accurate enough to fit into a 17th or 18th century fishing kit.
A number of the big vendors carry fishing kits and hooks. Check out Blue Heron, Jas. Townsend, Dixie Gun Works, Track of the Wolf, Avalon Forge, Smoke and Fire, and any number of other vendors. I've even been know to make some. This past Monday I made a dozen Viking era hooks with eyes, and a half dozen Great Lakes flaired end hooks (it was too hot to work outside on big projects in the forge).
Of course, these are but my humble opinions, and best used in conjunction with your own research.
yhs
Mike Ameling