Beleth

Bregolas (born F.A. 417) was the eldest child and only daughter of Bregolas, son of Bregor. Her remote descendant in the Second Age was Beregar, father of Erendis, queen of Númenor.

               Boromir
              (337-432)
                  |
       ----------------------
       |          |         |
     Bregor    Andreth    Beril
   (359-448)   (* 361)   (* 365)
       |
   -------------------------------------------------------
   |                     |          |          |         |
 Bregil = Arachon     Hirwen    Bregolas    Gilwen    Barahir
(* 386)              (* 389)   (393-455)   (* 397)   (400-460)
                                   |                 = Emeldir
              -------------------------------
              |             |               |
           Beleth        Baragund        Belegund
           (* 417)       (420-460)       (422-460)
              :             |               |
              :       Morwen Eledhwen      Rían
              :         = Húrin          = Huor
              :
           Beregar
          (of Númenor)
              |
           Erendis
        (queen of Númenor)

Sources: [[The History of Middle-earth]|HoME]] XI, 230-231.