I've never located a marriage date.The first 6 children were born in MO so we can assume Jane Ann and Henry were married there.The first child, Sarah Elizabeth, was b Feb 1837 MO.The third, Minerva Lewis, was b 1 Mar 1841 in Texas Co. MO. A bio for her husband, Francis M. Temple, says "Mrs. Temple was born in Texas County, Mo., and when eight years of age came to Arkansas."
In between those two girls apparently was a son Elijah, about whom I know very little.The book "Arkansas Damned Yankees" by Desmond Walls Allen, shows:Lewis, Elijah 1 Ark Cav Pvt Co. A enl 13 Nov 1862 Crawford Co AR age 24b. Texas Co., MO.
So, I would guess that Jane Ann and Henry Lewis were md about 1836 MO, and that we should try to find a marriage and other record in Texas Co. MO.However, that place appears to be a black hole for genealogy info.