They are Irish tinkers. And even though they may be born in Britain, they still have the accents...
What’s a tinker? I used a know a child who went by that name and there is an air force base in Oklahoma that goes by the name.
The UK use to be known as the most polite and civilized country in the world back in the 1960s. From what I can see the nanny/welfare state there has caused them to go backward into a feral state. It dovetails perfectly when the Muzzies run the show there starting around 2038.