Second Marriage?

When I was looking for my grandfather's brother, after I learned he existed, I found a marriage record for him. I duly recorded all the information and wen on to research other ancestors. When I found all three brothers and their marriages in Cameron County, I started in looking for their children. I found a few and decided to leave those ancestors for another time and instead I started researching another family with ties to Mexico. As I was researching in the Mexico church records, I came across a name exactly like this brother that I mentioned. I looked it up and read it. Well, he was the same brother married a second time. This record had much more information than the record from Texas. It mentioned how long his first wife was deceased, where she was buried, where he was from originally, that his mother was still living and that his father was deceased. He got married in two countries, one after the other, of course.