Eiffel, Watt, Northrop, Grumman, the Wright Brothers, Burt Rutan come immediately
to mind. All the astronauts.
The obvious ones in firearms have already been mentioned John Browning, Pederson, Garand,
Eugene Stoner, Ruger.
Most of the well known engineers have a company named after them because they became well
known because they developed a famous product. After working almost 40 years as an engineer,
I really never knew any engineers that wanted to have anything to do with celebrity. Most
engineers are interested in solving problems, and not interested in the silliness and stupidity
of celebrity. If they accidentally became famous, most were/are not interested in doing more than
a minimum 'polite' activity with the press, and then "leave me alone" to do my work. I know a
couple of fairly famous engineers and if they do anything with celebrity, it is to use it as a tool
to further their work - like get publicity to help get funding for a project.
Bill