This group of merchants is precisely Laine's party.
Laine left Surya and Amelia to look after the house. With the female knight's enormous prestige and status as the future lady of the barony, she easily took over the highest authority within the Baron's Domain. Laine also selected a stand-in to remain in the territory, temporarily having Amelia disguise the stand-in as herself to confuse the enemy.
The two Half-Elf guards are Estelle and Des, the blonde Sword and Shield Guard is Alfred, the taciturn steward is the Kingdom Knight Jerald, and the woman being groped by the fat man is played by Veronica. The eagle-nosed maid is actually the female sorcerer Teresa, who was feeling very uncomfortable as she removed the eagle-nose mask from her face: "If I had a choice, I really wouldn't want to wear this."
