1824 Tricolor (1835-36)
The first ensign flown by Texas Navy warships was probably the Tricolor of the 1824 Mexican Constitution. (This flag is best known as the “Alamo flag,” although it was probably never actually flown there during the siege in February and March 1836.) The 1824 Tricolor was adopted by the Texian provisional government on November 29, 1835 for use on privateers and “any vessel” operated on the authority of the government. The flag represented the Texians’ original allegiance to the 1824 Mexican Constitution. The Texian schooner Liberty flew this ensign in January and February 1836, and probably in early March of that year when she captured a Mexican schooner Pelicano at Sisal in the Yucatán.
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Sources
John Powers, The First Texas Navy (Austin: Woodmont Books, 2006).
Charles A. Spain, Jr., “The Flags and Seals of Texas.” South Texas Law Review, 33(1), February 1992.
Charles E. Hawkins Squadron 
I have “Flown” the 1824 flag from time to time. Neighbors usually think it is a “Mexican ” flag. My family came to Texas in 1823, so I understand its meaning. Thanks Andy !
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That would be what we call a “teaching moment.”
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