Pattsy is of American origin, derived from the given name Patricia. It is a diminutive form, often used as a nickname or shortened version of the name. The name Patricia itself comes from Latin and means "noble" or "patrician". Pattsy was popular during the mid-20th century but has since become less common.
The name Patsy was quite popular during the mid-20th century, with a notable spike in usage between 1939 and 1943, followed by a decrease thereafter.