What was the first brand of car to be invented?

There's no single answer to the question of the very first brand of car. The invention of the automobile was a gradual process with many inventors contributing. There wasn't a sudden appearance of a "brand" as we understand it today.

However, depending on how you define "brand" and "car," some contenders for early automotive pioneers include Benz (with Karl Benz's Patent-Motorwagen in 1886 often cited as the first practical automobile) and Daimler (Gottlieb Daimler's work was concurrent and arguably equally important). Neither started as a "brand" in the modern sense, but their inventions laid the groundwork for later companies bearing those names.