How much time would they have in Brethil? Morwen comes to Brethil shortly after the Dagor Bragollach and Húrin disappears during that time or in the aftermath of it.
It depends on when we place the skirmish that results in them going to Gondolin, but at a minimum, several years. The skirmish won't occur before the fall of Tol Sirion, which does not happen for over a year after the Dagor Bragollach, and most likely the skirmish will occur after the deaths of the outlaws in Dorthonion. It will happen before Beren and Lúthien go to Angband, but that does still give us a range of time from FA 457 to FA 461.
Here are some ages of mortals during this season (to help with the chronology):
Mortal Characters of Season 7
(Age at the end of Episode 1 [FA 463] - Age in Episode 13 [FA 472])
House of Bëor
Emeldir
(60 - deceased)
Emeldir (a decendant of Adanel, and Barahir's widow) will be the leader of the House of Bëor in Dor-lómin, as she is the one who decided the refugees could move from Brethil to Dor-lómin at the death of Andreth. While she could certainly still be alive at the time of the Nirnaeth, we will likely want to discuss plans for her death this season. She could, for instance, die in the plague that kills Lalaith in FA 469.
Morwen
(20 - 29)
Morwen is a teenager at the time Húrin and Huor go missing. She marries Húrin upon his return (when she is 20), and their son Túrin is born within the year (when she is 21). She is 23 years old when Lalaith is born, and 26 years old when Lalaith dies. She loses her husband when she is 29, and later gives birth to Nienor at age 30.
Rían
(13 - 22)
Rían was only 5 when she fled Ladros to live in Brethil, and is about 13 when she migrates with her cousin Morwen to Dor-lómin. She meets Huor after his return from Gondolin, and at some point near the Nirnaeth, they wed and she becomes pregnant with their child Tuor. She is very distraught over the loss of her husband, and after giving birth, leaves her son with the exiled elf Annael and dies on the Hill of the Slain when she is only 22.
House of Haleth
Haldir
(54 - 63)
Haldir was fostering his nephews Húrin and Huor in Brethil at the time they went missing. He'd be about 54 years old by the time they return. He outlives his brother-in-law Galdor, and is able to lead the host of Brethil in the Nirnaeth despite being in his 60s. He dies in the battle, and his widow Gloredhel dies that same year.
Hareth
(48 - 57)
Haldir's sister and Galdor's wife. She is the mother of Húrin and Huor and will definitely feature in the reunion scene in Dor-lómin. She grew up in Brethil, but has lived in Dor-lómin since the double wedding 27 years prior. She sent her sons to her brother and sister-in-law in Brethil, and they went missing from there. We have not discussed a storyline for her character yet, but we could do so this season. She will be 57 years old at the time of the Nirnaeth.
Handir
(22 - 31)
Handir is Haldir and Gloredhel's son. He's certainly old enough to go with his father to fight in the Nirnaeth, but if so, we will probably want him to survive. He is the double first cousin of Húrin and Huor, and spent his early teen years with them while his parents were fostering them He and his wife Beldis have a son (Brandir the Lame) early in Season 7, so Brandir is 7 years old at the time of the Nirnaeth. .
House of Hador
Húrin
(24 - 33)
Húrin son of Galdor is born in Dor-lómin and fostered by his aunt and uncle in the Forest of Brethil as a teen. He is involved in a skirmish with orcs north of Brethil and taken by eagles to Gondolin sometime in the age range of 18-22. He will be 24 years old at the time he leaves Gondolin and returns to Dor-lómin. He will marry Morwen and become the father of Túrin within a year. Lalaith is born when he is 27 (and dies when he is 30). He will be 33 at the time of the Nirnaeth Arnoediad and his capture. His son Túrin will be 8 years old.
Huor
(21 - 30)
Huor son of Galdor is born in Dor-lómin and fostered by his aunt and uncle in the Forest of Brethil as a young teen. He is involved in a skirmish with orcs north of Brethil and taken by eagles to Gondolin sometime in the age range of 15-19. He will be 21 years old at the time he leaves Gondolin and returns to Dor-lómin. He will marry Rían (who is 8 years younger than him) shortly before the Nirnaeth Arnoediad. He will be 30 years old when he dies in the battle.
Galdor
(51-deceased)
Galdor is the son of Hador who survived the Dagor Bragollach (unlike his younger brother Gundor). He has two sons, Húrin and Huor, whom he sent to be fostered with his sister and brother-in-law in Brethil when they were teens. He is the Lord of Dor-lómin, but he will die very early in the season, leaving that position to his son Húrin, who has recently returned from Gondolin.
Glóredhel
(53 - 62)
Glóredhel is the eldest child of Hador and Gildis. She married Haldir at the double wedding [in Season 5] when she was 26 and then moved to Brethil. Their only child Handir was born five years later when she was 31. She fostered her nephews Húrin and Huor in Brethil while they were teens, but they were lost. At the end of Season 7, her husband will go to fight in the Nirnaeth and never return; she will die of grief that same year.
In Season 7, all of the mortal characters listed above are living in Dor-lómin, with the exception of the ruling family of Brethil - Haldir, Glóredhel, and their child Handir.
Hopefully this information will be helpful while working out storylines featuring these characters!
