Most of what you have seems correct. The only question I have is regarding Mary Crenshaw. I found some indication that she married George Smith Allen, Joseph's brother. I am not sure where the Elisha you have married to her would have come from. Joseph and Ann have an Elisha born in 1824, my gg grandfather, who married Sarah Langston who gave birth to my grandfather, Henry Allen. Do you find a marriage record for Mary and ELisha? I have looked at many trees that show Joseph married to Mary, but I found a record for Joseph and Ann being married in 1822. There is lots of Crenshaw information out there. My problem is with Joseph's parents. I think that Elisha Johnson Allen may be his father, but no indication who his mother was? Let me know if I have something you need.