Dominguito Del Val
Saint Dominguito del Val (died c. 1250) was a choirboy and the alleged victim of a ritual murder by Jews in Zaragoza (also known as Saragossa). Dominguito's story is related to the blood libel against Jews that grew in prominence in the 12th and 13th centuries of the Middle Ages, and contributed to antisemitic incidents. Saint Dominguito is no longer included on the official Roman Catholic liturgical calendar; however, there is still a chapel dedicated to him in the cathedral of Zaragoza. There exists little historical evidence of Dominguito aside from the stories and legends built around him; it is difficult to ascertain how much, if any, his story is true.
According to the story, the Jews of Zaragoza plotted to kill every Christian in Zaragoza. The magic ritual to do so required a Christian heart. They captured the innocent Dominguito on Good Friday, re-enacted Jesus's trial by Pilate and Caiaphas in celebration with Dominguito as Jesus, then ritually murdered him via crucifixion. Luckily for the Christians, the blackguard sent to finish the ritual stopped by a church for unclear reasons and was found with the boy's heart. He confessed, and all the Jews of Zaragoza were executed due to their murderous, and likely fictional, plot.
Dominguito del Val is considered the patron saint of altar boys, acolytes, and choirboys.
Read more about Dominguito Del Val: Dominguito's Legend