Claim: Quirinus(Feast: June 4) was a Bishop and martyr who was executed by drowning and  died in 309 AD Sabaria, Pannonia, Roman Empire and venerated by the Roman Catholic Church.
Evidence: Quirinus (Croatian: Kvirin) (died 309 AD) is venerated as an early bishop of Sescia, now Sisak in Croatia. A Passio, considered unreliable, states that Quirinus was killed during the persecutions of Diocletian after being arrested in 309. After three days, the governor of Pannonia Prima, Amantius, ordered him taken to Sabaria (present-day Szombathely, Hungary), where after attempting to make Quirinus abjure his faith, he had the bishop thrown into the local Gyöngyös River with a millstone around his neck. A variant of the legend states that he was almost killed during Diocletian's persecution of Christians: the authorities tied him to a millstone and threw him into a river, but he freed himself from the weight, escaped and continued to preach his faith. 309 AD
Sabaria, Pannonia, Roman Empire Roman Catholic Church 4 June millstone hanging from his neck 
Pannonia Prima was an ancient Roman province. It was formed in the year 296, during the reign of Emperor Diocletian.