Watts associated w/ 3rd Regiment MO Cavalry, Rolla, MO, Civil War

I am looking for information on Miss Louie Watts (maiden name) who was married in late 1862 in Rolla, Missouri (Phelps County) by the chaplain of the 3rd Regiment Missouri Cavalry whose post was in Rolla. Maybe she is related to William A. Watts who served with the 3rd Regiment as Prom. Hsp. Steward and/or Elizabeth Watts who served as the “Matron” for the 3rd Regiment? (The 3rd Regiment was composed of more recruits from Illinois than Missouri and was commanded by Col. John M. Glover.)