The following saints are memorialized on March 19:
Adrian of Maastricht
Alkmund of Northumbria
Amantius
Andrea Gallerani
Apollonius
Clement of Dunblane
Gemus
John of Panaca
John the Syrian of Pinna
Joseph
Lactan of Freshford
Lactali
Lambert of Lyon
Landoald of Maastricht
Leontinus
Leontinus of Saintes
Marcellus Callo
Mark
Narcissus Turchan
Pancharius of Nicomedia
Quartilla
Quintilla
Quintius the Martyr
His feast day is March 19th.
It is the Feast Day of a particular saint whose name you share. E.g. St. Joseph's Feast Day is March 19th. If you're named Joseph then I hope you had a happy Onomastic or "Name Day" this past March.
Saint Laura's Feast Day is October the 19th.
Roman Catholic AnswerThe feast of St. Joseph always falls on the 19th of March, which is in Lent. This year, 2012, it falls on a Monday.
The feast day of Perpetua is March 7.
Her feast day is on March 3.
March 3 is Katharine's feast day.
March 7 is the feast day of St. Perpetua.
March 17 is the feast day of Saint Patrick.
March 20 is the feast day of Saint Alexandra of Amisus.
The feast day of Saint Cuthbert of Lindisfarne is March 20.
March 9 is the feast day of Dominic Savio.