We’ll just call this one Part VII.2 since I ran into the photo limit on Part VII.
Artos Stark, called Artos the Implacable, was the third son of Beron Stark. He married Lysara Karstark. They had twin sons Brandon and Benjen. Both sons had issue and were presumably married, but their names are unknown.
Brandon Stark was the youngest child of Lynara Stark. He became Lord of Winterfell after the death of his brother Barthogan in Skagos. He had four children. Three by his wife Alys Karstark, Rodwell, Beron and Arsa, and one by Wylla Fenn, Lonnel Snow. Rodwell married Myriame Manderly, but died without issue. His younger brother Beron became Lord of Winterfell. He married Lorra Royce, with whom he had seven children. The fate of Arsa Stark is unknown.
Arra Norrey, the first wife of Cregen Stark, and her issue. I head cannon that Cregen Stark took a look at the Dance of the Dragons and was like not in my House dude! Then creepily married his granddaughters off to his younger sons instead of letting Serena inherit Winterfell like she should because the patriarchy. Results seem to have been mixed.