Pam, I am related to Marie Thersa BERTHELOT who was married to Francois Stelly(Stelli,echstelly). They had at least nine children and three of them married into the Dr. Francois Robin family.
Emillie Stelly was bapt. on 30 Oct. 1791,St. Landry Parish,and m.Louis Joseph Francois ROBIN in 1807 at Grand Cateau,La. Emerante STELLY m. Jean Louis Robin Louis Stelly m. Theresa ROBIN
Then to make matters worse, after Fransois STELLY died in 1806, Marie Theresa BERTHELOT married Dr. Fransois ROBIN on 19 March 1810. He was the widower of Marie Felicite Pictoe Belletre. I am not sure but I think that this made Marie Theresa one of her own In-laws. Any of this ring a bell?