Ba -> Bo _> B0 -> Br -> Br -> Bo ->
A name is want I want to hear,
so say it out loud and clear.
Morwen? (see below)
Morwen was a daughter of Baragund of the House of Bëor, and she married Húrin of the House of Marach.
While Morwen has not been confirmed, you can see that the House of Beor lineage on Morwen's page link below seems to confirm it has to do with the House of Beor in some way.
(I answered Morwen as a Dark Servant and died -- Jeremy Richman.)
Tolkien Gateway: Morwen