He fought at the Battle of an Jacinto on April 21, 1836, as part of Captain Jesse Billingsley's Company of Mina Volunteers. By 1838, he was married to Sarah J. (last name unrecorded) and his family were all living in Washington County, where he was granted a league of land for his military service. He died on July 27, 1845 while living near Brenham and buried in an unmarked grave in the Old Independence Cemetery.
NoteConnell's grave was unmarked when he was buried and the exact location has been lost, but it is likely he rests somewhere in the photo below, as this area is where many who died in 1846-1848 lie.
Old Independence Cemetery