Ken,
The listing I have for the 3rd Alabama Cavalry and its companies is as follows:
Co. A - Ruffin Dragoons/Rangers (also Sumter Cavalry)
Co. B - Monroe Blues/Percy Walker Rangers
Co. C - Wilcox Rangers, Wilcox Dragoons, River Rangers or Alabama Mounted Rifles
Co. E - Humphries Dragoons
Co. G - Floyd Bush Rangers
Co. H - Prattville Dragoons
Co. I - Mathews Rangers
Co. K - Crocheron Light Dragoons
As we see some of the companies had different names. A listing of Alabama companies that I have makes no mention of a Butler Cavalry. I am sure that source is not 100 per cent complete. Maybe one of the above companies also used the name Butler Cavalry?
Greg Biggs