I believe that Luke Hall, brother to twins Elisha and Elijah Hall, also had sons named Elisha and Elijah, and one or both may have served in the Union Army, as did Luke's son, David. I've never been able to completely straighten out the same names used in all generations of those Halls, but Luke was the son of Samuel, and Luke's son, David, had a son, Luke who was my g-grandfather. I was able to prove the line through David's military and pension record.