Hey guys,
Thank you for the input.
Puffer, I am planning to portray William Barret Travis, the Lieutenant Colonel Commander of The Alamo garrison in 1836. He was a cavalry man, but of no real unit. The American colonists of the Texas Revolution were more militia than military. The only organized unit, arguably, were the New Orlean Grays. He was not a part of that outfit.
So, I imagine, if he had a sword, it would've been an American blade that may have been shipped into the Texas colony, possibly through the ports in New Orleans.
Thank you all for the help. While I may not have the money now to purchase such a blade, the links and references will be valuable for later use.
~Wade