I need information for two ancestors; Wiley F. Harrison and William Matthews. Wiley F. Harrison was on roll of 1st Regt. FL U.S. Cavalry. Was William Matthews, huband of Molcy Miller Matthews, ever a member of the 1st Regt FL U.S. Cavalry? He died at Elmira, NY, POW Camp. I have found William Matthews as a member of Godwin's 15th Cavalry Co. B. I also found 1st FL.Infantry written by his name. Was the 1st FL. Infantry a part of the 1st Regt. FL U.S. Calvary?