Today is my names day. In Poland and some other European countries, celebration of "names day" is more elaborate than a birthday. You get presents, flowers and you party. In most calendars, almost every day has few first names mentioned in it. For example, on May 23rd, people with names: Iwona, Emilia, Dezydery, are having their names day. On that day, every person named with this first name celebrates a names day. Names day's origin comes from Christian church calendar, where on certain days of the year certain saints are mentioned. This tradition comes from an early church, when believers wanted to remember the martyrs who gave their life for Christ.
There are names, of course, which are repeated few times in a calendar during the year, because there was more than one person with given first name, who ended up being recognized as a saint by a Catholic church.
Your first given name should be picked by parents after some saint, whom they believe, will watch over you thorughout your life.
Meaning of my name comes from the root "iv" - "yew". The strongest bows were made from this tree for centuries, so it symbolizes strength. It is an evergreen tree, so it symbolizes eternity.
As for the saint patrons. That would be probably John Baptist Rossi, but there are 2 of them. One was a Carmelite General, who recognized the call on Theresa's of Avilla life, and encouraged her to start more monasteries.
The other one was a priest from Italy in XVII century, who took care and preached to the poorest of the poor, and one of the greatest confessors during this time.
The other option for my saints patron would be saint Ivo of Chartres, bishop and teacher, imprisoned for opposing king's attempt to abandon his wife.