|“||...and that's how, 150 years ago, your great-great-grandfather Gustav came to own this farm.||”|
Gustav was the grandfather of Grandpa Dave and also the great-great-grandfather of Arthur Read, D.W. Read, Kate Read, and Cora. He is only mentioned once, in "Grandpa Dave's Old Country Farm." He bought the land in the town that Grandpa Dave's farm was on.
- When the episode "Grandpa Dave's Old Country Farm" aired in 1996, it's possible that the farm was made in 1846, considering that 150 years from 1996 was 1846.