Name: Eddison Tollett
Alias: Dolorous Edd
Allegiance: Night’s Watch [he is the squire of Lord Commander Jeor Mormont then Jon Snow], he swore his oath when he was fifteen.

House: Tollett of the Grey Glen [from the Vale sworn to the Royces from Runestone]
Coat of Arms: Pily grey and black
Words: When All Is Darkest
Seat: Grey Glen
Current Lord: Lord Uthor Tollett
Region: The Vale
Title: Lord of the Gley Glen
Overlord: House Royce

Books:
A Clash of Kings (II.)
A Storm of Swords (III.)
A Feast for Crows (IV.)
A Dance with Dragons (V.)
TV episodes:
The North Remembers (s02e01)
The Night Lands (s02e02)
The Ghost of Harrenhal (s02e05)
The Prince of Winterfell (s02e08)
Valar Morghulis (s02e10)

In the books: While Edd is tall and young, he has grey hair.
In the TV series: Edd is short and his hair color is brown.