No.

Unless an oblique reference is made that I’m not aware of, I can’t find reference to Joan of Arc in:

• The seven narrative books
• The three supplementary books
• Any J.K. Rowling interview
• Any Pottermore update so far

I searched the complete text of the ebooks, Accio Quote (a JKR interview site) and my personal Pottermore archive for the phrases “joan of arc”, “joan” and “arc”, and found nothing remotely connected to Joan of Arc.

As further evidence to support my claim, I point to the lack of an HP Wiki article about her, or any Google results that even hint at such a mention.

No.

Unless an oblique reference is made that I’m not aware of, I can’t find reference to Joan of Arc in:

• The seven narrative books
• The three supplementary books
• Any J.K. Rowling interview
• Any Pottermore update so far

I searched the complete text of the ebooks, Accio Quote (a JKR interview site) and my personal Pottermore archive for the phrases “joan of arc”, “joan” and “arc”, and found nothing remotely connected to Joan of Arc. ETA: Per Izkata’s suggestion, “jeanne” also turns up nothing.

As further evidence to support my claim, I point to the lack of an HP Wiki article about her, or any Google results that even hint at such a mention.

No.

Unless an oblique reference is made that I’m not aware of, I can’t find reference to Joan of Arc in:

• The seven narrative books
• The three supplementary books
• Any J.K. Rowling interview
• Any Pottermore update so far

As further evidence to support my claim, I point to the lack of an HP Wiki article about her, or any Google results that even hint at such a mention.

No.

Unless an oblique reference is made that I’m not aware of, I can’t find reference to Joan of Arc in:

• The seven narrative books
• The three supplementary books
• Any J.K. Rowling interview
• Any Pottermore update so far

I searched the complete text of the ebooks, Accio Quote (a JKR interview site) and my personal Pottermore archive for the phrases “joan of arc”, “joan” and “arc”, and found nothing remotely connected to Joan of Arc.

As further evidence to support my claim, I point to the lack of an HP Wiki article about her, or any Google results that even hint at such a mention.