Baelaith, daughter of Beleguron, was born in Evendim, Tinnudir to be precise.

She is known as Baelaith to her kin, while the elves called her Ruines, a sindarin reference to her surprising hunting skills.
She was able to prove her skills in combat more than once, but her father preferred to keep her safe from danger.

Baelaith grew up together with her younger sister Braigwen and her older brother Methedir.
When she was only 35 years old, Methedir left the family in Tinnudir behind to investigate in the lands of Angmar.
The two sisters suffered much under the absence of their brother, yet there was nothing they could've done to change his mind.

It was a calm night above Tinnudir, when the alerting sound of the watch's horn woke her up immediately. Tinnudir fell under attack of Angmar's servants, masked men in robes with long blades and swift bows.

Baelaith was able to hide herself from the sight of the attacker and even though she shot a lot of arrows into their backs, she wasn't able to keep them from murdering her family.
She fled, with a few others, to Ost Forod.
Weeks passed and the few survivors had to move on somehow.
And this was, when Baelaith and her companions decided for her to travel to Esteldin, to find shelter within its' walls.

This is where Baelaith met Halthorn, captain of the Green Company, who was the only Captain, who understood her unceasing will to get back to the field, against the elder's better advice for her to stay safe.
With his help, she was able to get back to Tinnudir and later on joined his ranks.
The Green Company became her new family.