Mycah Umber

Mycah 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
Mycah Umber is an early member of House Umber. He was the second born son of Lord Hothor Umber and his wife Lady Amarylis Umber. He swore himself to the brotherhood of the Night's Watch at the age of twenty but died a violent death fifteen years later at Castle Black.

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

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