Isabelle of France
French Roman Catholic princess, nun and blessed
Feast: 22 February (not on the universal Roman calendar; kept in the Roman Martyrology or local calendars)
Who they were
At Longchamp on the outskirts of Paris in France, Blessed Isabelle, virgin, who, sister of the king Saint Louis IX, having renounced a royal marriage and the pleasures of the world, founded the convent of the Sisters Minor, with whom she served God in humility and poverty.
The miracles
The Roman Martyrology does not describe the miracles approved in the cause.
Why that counted as sanctity
The Roman Martyrology remembers her on 22 February as the sister of Saint Louis IX who refused a royal marriage and founded the Sisters Minor at Longchamp.
The cause
The cause continues. No postulation address is published here yet. Favours received through this person’s intercession, and offers of help, are best sent to the religious order or congregation they belonged to, or to the diocese where the cause was opened; either will pass them to the postulation.
Connected on this site
- Louis IX of France Saint Brother or sister“She was a younger sister of King Louis IX of France (Saint Louis) and of Alfonso, Count of Poitiers, and an older sister of King Charles I of Sicily.” — Wikipedia
- Roman Martyrology, 22 February (Italian Bishops' Conference, Santo del giorno)
- Wikidata Q236952 — dates, feast day and identifiers (CC0)
- English Wikipedia — Saint Isabelle of France (CC BY-SA)
Checked against the sources listed on 22 September 2026. Corrections welcome.