Were ancient Japanese daimyo hereditary?

Daimyo (だいみょう) was the name given to lords by the feudal system in ancient Japan.

Transformed from the larger term namelord, the so-called namelord was the lord of certain lands or estates, and the one with more and larger lands was the daimyo lord, or daimyo for short.

The lord of a land or an estate, in order to protect his home, most of them have their own force, generally called samurai, which is equivalent to the ancient Chinese courtyard guards, guards, the larger the scale, and then become the lord of a country, then the so-called daimyo.

The definition of a daimyo varies somewhat from era to era in Japan, but it's the same as being a landowner who rules over a territory. A daimyo is the equivalent of a vassal in ancient China. The term "daimyo" has some differences in meaning from one era to the next.