I'm Confused

Hi Bill, I have a Pablo Vasquez on IGI who married Martina Esparsa on 18 Feb 1835 and my 4th grt grandmother should be Matiana Esparsa but then I found a child who I do recall named Petra Vasquez Esparsa on IGI born Feb 1845 in Calvillo. And I found my 3rd grt grandfather just now on IGI Leandro Vasquez was baptized on Mar 1848 in Calvillo so now I have solid proof that the Vasquez came from Calvillo. Do you think Matiana and this Martina could be the same person? I think they should of married before 1845 I was totally off. I had Leandro born on 1857 which is 9 years Off!