Lechites were one of the tribes that united to form Poland
Lechites is the name attributed to Polish tribes as an entity. There wasn't an individual Polish tribe which united with other Polish tribes...
Wow I didn't even know that there's even such a thing as Polish tribe(s)! So all ethnically Polish people are descended from Lechites? So the Lech brand of beer is named after Lechites? I've heard Lech only as a first name, most recently and world-famously a Polish former president from 1980s or 1990s I think. Is Lech still a commonly used first name in Poland? Are there many youngster-aged to young-adult Lechs nowadays?
And another question about unpopular Polish first names, have there been instances in Poland where once-popular Polish first names become widely unpopular in a short period of time solely because of the unpopularity of certain famous Polish persons (such as Polish actors/musicians, athletes, politicians etc? Or perhaps a Polish person with a certain first name becomes famous in a negative way?...or maybe a combination of those two reasons? If correct, then what are some examples?)