St. Louise de Marillac, March 15
Widowed at 34, Louise de Marillac (1591-1660) worked with St. Vincent de Paul to found the Daughters of Charity in 1633. Instead of a cloister, her sisters lived among the poor, the sick and abandoned children. She is the patron of social workers.
March 15 has no celebration on the General Roman Calendar, so this page follows the Roman Martyrology, which remembers Saint Louise de Marillac, religious on this date.
Other saints on March 15
- St. Longinus, the centurion at the cross, by tradition
- St. Clement Mary Hofbauer, apostle of Vienna (1820)
Name days on March 15
In countries that keep name days, March 15 is the day for people named Louise and Louisa. These names come from the same saint, as variants, nicknames or forms used in other languages.
| Name | Feast day |
|---|---|
| Louise | March 15 |
| Louisa | March 15 |
March 15 on the calendar
March 15 is the 74th day of the year (the 75th in a leap year), with 291 days left until December 31. Here is the day of the week it falls on in the coming years:
| Year | Day |
|---|---|
| 2026 | Sunday |
| 2027 | Monday |
| 2028 | Wednesday |
| 2029 | Thursday |
| 2030 | Friday |
Keeping March 15
March 15 falls in winter. Since the general calendar has no celebration that day, the Mass is usually that of the weekday of the season, and the saint may be remembered in local calendars or in personal prayer. Families who keep name days often mark the day with a card, a candle or a favorite meal, and parishes named after the saint may hold a festival. If you know someone named Louise and Louisa, it is a good day to send a note.
Saints of the week around March 15
| Date | Saint or feast |
|---|---|
| March 12 | St. Maximilian of Tebessa |
| March 13 | St. Euphrasia |
| March 14 | St. Matilda |
| March 16 | St. Heribert of Cologne |
| March 17 | St. Patrick |
| March 18 | St. Cyril of Jerusalem |
The day before, March 14, is the day of St. Matilda. The day after, March 16, belongs to St. Heribert of Cologne. Looking for a name? Try the name day calendar or go back to today’s saint.