Extract the names of Jesse LaFollette's grandchildren from the provided passage

Context: Jesse LaFollette was the grandfather of Robert Marion La Follette, Sr., William La Follette, and Harvey Marion LaFollette. His family lived next to the Knob Creek Farm, Kentucky owned by Thomas Lincoln during Abraham Lincoln's boyhood years. LaFollette is shown in one of the limestone panels at the Lincoln Boyhood National Memorial in Lincoln City, Indiana.

Answer: Robert Marion La Follette, Sr., William La Follette, and Harvey Marion LaFollette