Yes, this is my Pearson family. Thank for you the marriage information. The TX marriage records have apparently been added to FamilySearch since I posted my message last year. My father was Janie's nephew and lived in Post at the time she married. Information handed down from my father and his first cousin indicated she never married. Interesting. She must not have been married for very long.
I agree with the rest of your information with the exception of the Matthew M. Pearson/Pierson who married Rosa. He was not the son of Joseph and Margarette Pearson. Their son - and my grandfather - was another man, John Matthew Pearson.