The William Tanner House Museum, also known as the William A. Tanner House, is a historic residence and museum in Aurora, Illinois. It was built in 1857 for William A. Tanner, a hardware merchant. His descendants lived in the house until it was donated to the Aurora Historical Society in 1936. It now operates as a Victorian-period historic house museum.
Tanners descendants lived in the house for more than 100 years
This is definitely incorrect because it was built in 1857 and donated in 1936, which is less than 100 years. I think the system has a hard time with calendar math.