Heward

Heward is an unseen character in the first season. He is a guardsman sworn to House Stark.

Season 1
Heward accompanies Lord Eddard Stark south when he becomes the Hand of the King. He's tasked with protecting the chambers of Sansa and Arya Stark when Lord Stark goes to one of Petyr Baelish's brothels to investigate about the bastards of King Robert.

Heward is killed along with the entire Stark household following the arrest of Lord Eddard.

In the books
In the Song of Ice and Fire novels, Heward is also a guardsman sworn to House Stark. Instead of being assigned to protect Lord Eddard's daughters, Heward accompanies Ned to Chataya's brothel and is killed by Jaime Lannister's men.