Brave Fine Art has dated this piece to the 19th Century.
The portrait is unsigned but clearly by an academy-trained hand.

Oftentimes, portraits of this nature are copies of renaissance or baroque originals but we’re unable to find another version. It’s also interesting to note the unconventional look of the subject - she’s beautiful but not in a traditional way (e.g. how an old master would envisage a female saint).

So with this in mind, perhaps the creator has been influenced by the approach of the Pre-Raphaelite Brotherhood who were working around the same time. The Pre-Raphaelites shrugged off the conservative conventions of the past and sought to bring real-life into their creations. Modern figures were juxtaposed with ancient symbolism.

Alternatively, could this be a commission by someone seeking to reference their religious views? For example, in the 17th-century, Catherine of Braganza (1638-1705) was depicted as Saint Catherine by Jacob Huysmans (1633-1696) to reference her devotion to Catholicism.

We may never know the true story but this only adds another layer of intrigue and mystery to this beautifully rendered painting.
Medium: Oil on canvas
Overall size: 23” x 29” / 59cm x 73cm
Year of creation: c. 1870
Provenance: France
Condition: Very presentable. Canvas relined and stretchers replaced.
Brave Fine Art has dated this piece to the 19th Century.
Exquisite antique paintings that capture the imagination.
You can view the stock and full dealer information on the Brave Fine Art Profile Page