The vagrant mountain was where the founding patriarch had lived during his days as a youth before he became a cultivator, it was a form of remembrance to his roots.
The family was called Boyle and apparently, according to some rumors it had some ancestral ties with the Eldra royal family, it was said one of the reasons the Boyle family could grow so fast and was so prosperous was because of the royal family.
Ainz looked around the place, and could see how bustling it was, if one didn't know they would think it was part of the city, while it was just the peripheral part of the city.
Trevor showed him around, while explaining different things that he thought might prove useful to him.
