Lordsport dockhand

A Lordsport dockhand is an unnamed minor character in Game of Thrones. He is played by guest star Jer O'Leary and only appears in the second episode of the second season.

Season 2
He is working when Theon Greyjoy arrives in Lordsport. He is unmoved by Theon introducing himself as the heir to the Iron Islands. Theon pays him to find a horse to take him to Pyke. Yara Greyjoy offers to take Theon and Theon pays the dockhand a little more to ensure that his belongings are sent to Pyke when they are unloaded.

In the books
In the Song of Ice and Fire novels, Theon pays the Captain of his ship to forward his belongings. He tries to buy a horse from an Innkeeper but is met by his uncle Aeron Greyjoy.