Curiouser

I really don't know what to make of this gobbet, published in the American Flag, the newspaper of Matamoros in the 1840s on February 13th, 1847:

HISTORICAL QUESTION.
Q. Where was the Cradle of Liberty first seen?
A. On the Rock of Plymouth.
Q. Who rocked the cradled?
A. The Pilgrim Fathers.
Q. Why did they rock the cradle?
A. To put the infant Liberty to sleep, whist they put the Quakers to death.