Blaise was one of the most popular saints during the Middle Ages, a key member of the Fourteen Holy Helpers who were great at medical interventions; Blaise's specialty was throat ailments,
and on 03 February there is a special blessing performed where you take two of the candles that were used in the previous day's Candlemas observance (or Le Chandeleur for you crepes connoisseurs) and hold them crossed over the throat of the patient/penitent, while saying a special blessing/incantation.
He is the patron of the city of Dubrovnik going way back to when Ragusa was another rival trading port to Venice, and bits of his corpse are paraded on this day. An avatar of Blaise in the form of a bearded elderly wizard appeared on the city's seal and coinage up until the Napoleonic re-arrangements.
Because Blaise was tortured with metal combs before being beheaded, in addition to being important to Dubrovnik and people with throat problems, he is also the patron of woolworkers, including those in milltowns in England like Jersey. This also means that inventories of his relics spread throughout many churches show that he had at least eight arms, four heads, several jaws, and while they were at it, multiple whole bodies.