[Dûrbelethwen]

I know most of the Valar were married and Professor Tolkien mentions at least one Maiar couple. I also read in another thread that originally the Maiar were supposed to be the descendants of the Valar. Since that idea was later changed does anyone know if there were any children resultant from Ainur marriages (with the exception of Melian). Thank you.
Sorry if this subject has already been brought up but I could not find anything like it when searching