St. Patrick wasn't even Irish.
Cinco de Mayo isn't even an important holiday in Mexico. It clearly is NOT Mexican independence day.
So equating anything to these two so called holidays is picking a very weak comparison.
Well that's the best this Texan could do. We don't hear much about Jewish, Polish, Russian, Chinese, Canadian etc.. holidays. Mostly there are only three type Texans; those who eat tacos, those who eat chicken, and those who eat roast beef.