Daragh Umber

Daragh Umber is an unseen character in Game of Thrones. He is not expected to appear in the series, being long dead by the time it starts. Daragh is one of the earliest recorded members of House Umber.

Background
With his wife Morag, Daragh had a son, Hothor Umber, who continued the family line with seven children of his own with Amarylis Manderly.

Season 1
He has an entry in The Lineages and Histories of the Great Houses of the Seven Kingdoms.

Reference

 * "A Golden Crown"