Incidentally, Benz' wife, Bertha used her dowry to pay off his debts and keep him in business. She also undertook the world’s first long-distance car journey, and is acknowledged as the first lady motorist in history.
Daimler received his patent for a "vehicle with gas or petroleum drive machine" in 1885. Benz built three gas engine models between 1885 and 1887, and received the patent for his design in 1886.
In the United States at the time, cars powered by steam, gasoline, and electricity were all proliferating on the roadways.
In April 1900, Emil Jellinek, an Austrian businessman made an agreement with DMG (Daimler Motoren Gesellschaft, or Daimler Motor Company) to buy and resell its cars. He decided to use his young daughter's name, Mercedes, as a product name. Jellinek ordered 36 vehicles at a total price of 550,000 marks, equivalent to over 2 million dollars today. A few weeks later, he placed a new order for another 36 vehicles.
This first ‘Mercedes’ was developed by Wilhelm Maybach, the chief engineer at DMG, and it is regarded today as the first modern automobile.
After various iterations, in November 1921, DMG applied for patents for a three-dimensional three-pointed star enclosed in a circle and it became a registered trademark in August 1923. Daimler and Benz merged in 1926. Now you know how all the names and pieces fit together.