Saint Emeric of Hungary -  (1000 – 1031) was the son of  Saint Stephen I, King of Hungary and he  is assumed to be the second son of Stephen and Giselle.   At the ages of 15 to 23,  Emeric received a strict and austere  education from the Bishop of Csanád, Saint Gerhard.  Emeric was the only one of Stephen’s sons who reached adulthood.

Emeric was betrothed as the next Monarch of Hungary, and his father worked tirelessly preparing him for this task, although his father’s plans would not be realized.   On the 2nd of September 1031 Emeric was killed at the age of  24 by a boar while hunting. Saint Emeric was buried in the Cistercian Church in Székesfehérvár, where several wondrous healings and conversions took place at his grave.  On November 5, 1083, King Ladislaus I unearthed Emeric’s bones in a big ceremony, and Emeric was canonized for his pious life and purity along with his father and Bishop Gerhard by Pope Gregory VII.

Amerigo Vespucci was presumably named after Saint Emeric, and therefore so were the Americas, indirectly. St. Emeric is most often pictured in knight’s armour with crown and lily.

References
Sauser E, Biographisch-bibliograophisches Kirchenlexikon (German, title transl. “Biographic-bibliographic encyclopaedia of the Roman Catholic church”) Vol XXI, pub. Bautz, 2003, ISBN 3-883-09038-7