From the Patron Saints Index: Daughter of a pagan chieftain. Converted to Christianity around age twelve, and dedicated herself to God. When ordered by her father to marry, she refused. Her father was enraged, and imprisoned her. She managed to escape, fled to Laon, Picardy in France, and lived as an anchoress in the forest. Her father dispatched agents to find her. They did, and when she refused to return and marry, she was beheaded. Locals built a chapel over her grave; it soon became known as a site of miracles, and the town of LaChapelle grew up around the site.
Saint Grimonia of Picardy was born in Ireland in the 4th century. The precise date is not known.
According to most sources on the internet, her year of death is unknown. One site did say she was killed on April 20th "in an unknown year." Thus we cannot calculate age.
Saint Noel Chabanel is a saint but not a patron saint.
Saint Aleth of Dijon (Alice) is a saint but not a patron saint.
*Saint Anne; Saint Anthony of Padua; Saint Dominic of Silos; Saint Elizabeth; Saint Gerard Majella; Saint Joseph
Kiara is a saint but not a patron saint at this time.
Babylas is a saint but not a patron saint.
Mellon is a saint but not a patron saint.
Saint Cocca is not a patron saint.
Yes, Saint Peter is really a saint. If he were not a saint he would not have that title.
Saint Lillian is not a patron saint as per the Patron Saint Index.
Yes, Saint Damian, the brother of Saint Cosmas, is a Catholic saint.