Dwarven Hammer Brothers

Crusher, Stone head, Knuckles and Hammer Hand
Meet the party at Dwarves have a Bone Devil 16.1.2023
Sent by Halfdan, prince of Fornost and son of Grendal, Lord of Fornost
Have a letter promising payment and services,
Part of Rees Mogg the Dwarven banker from Halls of Gold in the Nameless Hills
They are powerfull warriors who fought at Fornost, have Plate armour, Battle axes and War Hammers, gold, and a Bone devil provided by Rees Mogg the Dwarven banker - how does he have one ??
Knucķles and Hammer hand both die in the engagement, but Crusher and Stone Hand both having been greviously wounded, sue for their lives which