Thank you Ken. The capture is also described in WW Averell's book,"Ten Years in the Saddle." Captain Johnson,a former San Jacinto veteran and Texas Ranger,was surounded by a squadron of federal cavalry under Sturgis. He at first refused Sturgis's demand for surrender and dared the feds to attack him stating,"We are free white americans and may go where we please." The Texans were then promised good terms and released the next day,tho two were killed during the night while attempting to escape..Excluding Ft.Sumter,Sturgis thinks this was the first armed confrontation of americans against each other in the war.
I also seem to recollect an article on the incident in either the Civil War Times or SCV magazine a few years ago,but cannot locate it now....