St. Louise de Marillac died in 1660 yet she wasn’t canonized until 1934. Here is a very brief presentation about her canonization.

See a 1934 Photo of Pope Pius XI presiding at the Canonization of St. Louise

For a detailed account of the process leading to St. Louise’s canonization, read “Spes Unica– Path to Glory: The Canonization Process of Louise de Marillac” by Sr. Betty Ann McNeil, DC.