Hothor Umber

Hothor 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. He is one of the earliest recorded members of House Umber, and an ancient ancestor of the Greatjon

Background
Hothor Umber is an early member of House Umber. He married Lady Amarylis Manderly of White Harbor and she bore him five sons: Harkon, Mycah, Lucan, Gareth and Joseth, and two daughters, Regan and Corin.

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

In the books
Hothor Umber is referenced only in the TV adaptation of A Song of Ice and Fire and has no corresponding counterpart in the books.