My research revealed Rezin Todd and Mary Bitler as the parents of Mary Jane Todd.
Rezin Todd = Mary Bitler
b. 30 Jun 1817, Pickaway Co., OH b. 22 Feb 1824, Northumberland Co., PA
d. 17 Feb 1875, Wabash Twp, IN d. aft 1890, Geneva, IN
m. 9 Jan 1840, Adams Co., IN
Rezin was the son of John Todd and Sarah ___; Mary was the daughter of Samuel Bitler and Mary White.
Biographical and Historical Record of Adams and Wells Counties, Indiana; Chicago; Lewis Publishing Co.; 1887.
Hope this helps fill in the tree.