St Patricks Catholic church in Decatur verifies that Joannis is Latin for John, so youre right there. But the Bridgett Agnes Hill you found who died in 1940 died after both Mary and Alonzo. If this is Mary's mother she would be over 100 years old, since Mary was born around 1854. Maybe she's an unmarried sister of Mary? The Alonzo George Card you found in the death search is my great grandfather Alonzo. His family is pretty well traced back to the late 1500's. I am assuming that John and Bridgett Hill lived in the Macon county area. No census discoveries yet. Alonzo and Mary's marriage certificate was found by the good people at St Pat's in Decatur, and isnt in the state records yet.