I don't know anything about Manerva, but apparently Levi and his eldest son married sisters on his second go around with marriage. He married Mary Elizabeth Warf. There was a 26 year age difference between them and they had 8 kids. As follows Isaac who happens to be my great grand father, William,Henry,George,Madison,Mosses,Levi and Susan. If ya need to know anything else just post it I will get back to you.