Did Finwe have daughters?

[elbenprincess]

I´m confused, always believed Finwe had three sons, Feanor, Fingolfin and Finarfin, but now I read theat he has two or three daughters.

http://en.wikipedia.org/wiki/Daughters_of_Finw%C3%AB What is canon? Maybe it was just a early thought of tolkien?

And did galadriel has 3 or 4 brothers? I always believed this were Finrod, Orodreth, Angrod und Aegnor. But I read that Orodreth was Firods son and therefore gil-galad (last high king of the noldor) came from the house of Finarfin?
After Finarfon returned to Valinor he was amnestied by the valar and became king of the noldor. After the third age, where all the noldor returned, was he still king, or could another claim the crown?
Many of the noldor died, therefore I have no idea how much he ruled. Were that hundreds, thousands?