These two people give Thorin the staredown when he arrives at the Prancing Pony in Bree.
Who are these people? I didn't recall reading about them in the books.
In a word: Jackson-verse.
These Men aren't mentioned at all in The Hobbit book. They were just made-up for Peter Jackson's Hobbit movies.
Alleged name: "Bill Ferny Senior"
Actor: Dallas Barnett
Dallas Barnett was born on February 29, 1964 in Rochester, New York, USA. He is an actor and producer, known for The Hobbit: The Desolation of Smaug (2013), [...].
Bill Ferny Sr. was a Man of Bree and father of Bill Ferny who worked as an assassin, mercenary and bandit, alongside his partner in crime, the Squint.
Alleged relation(s): Bill Ferny, son
Alleged name: "The Squint"
Actor: Matt Smith
Matt grew up on the stories of Tolkien and George Lucas, and his role as Squint in 'The Desolation of Smaug' is his first major movie appearance.
The Squint was a Man of Bree and father of the Squint-eyed Southerner who worked as an assassin, mercenary and bandit along with his partner in crime Bill Ferny Sr.
Alleged relation(s): The squint-eyed southerner, son
Bill Ferny's and the southerner's fathers aren't mentioned at all in the books, therefore there is no backstory for them based on canon sources.