That earl, who was slaughtered by his vassals, didn’t only have a bad personality but also a poor sense for economy.
In order to pay back the debts the earl had amassed due to his wasteful habits, his family put the mansion up for sale after the Earl’s death, but each time potential buyers came to see the mansion, the Earl, who had become a wraith, appeared to interfere. In the end there was no one left aspiring to purchase it.
It was certainly natural that the buyers, who wanted this mansion, didn’t need such a wraith haunting it.