Final answer:
Laurent Clerc, a key figure in deaf education, did return to Paris after helping to establish the first school for the deaf in North America. The specific length and frequency of his visits are not well documented.
Step-by-step explanation:
The individual referred to as 'Clerc' appears to be Laurent Clerc, a notable figure in the history of deaf education. He was a French educator and was instrumental in the establishment of the first school for the deaf in North America.
After moving to the United States to help found the school, Clerc did indeed return to Paris. However, there is no widely documented evidence about the exact duration of his stay or how often he went back to France after settling in the United States.