Wibberley (Lord)

Lord Mazin is an unseen character mentioned in the fifth season.

Background
Lord Mazin is the head of House Mason.

Season 5
Lord Mazin sends a message to Lord Commander Jon Snow in which he agrees to send men to join the Night's Watch.

In the books
In the A Song of Ice and Fire novels, there is no mention of any House Mazin. The name was an in-joke reference to fellow scriptwriter and friend of the showrunners, Craig Mazin.