Question about the 5th Duke of Aosta's (1943-2021) children

[bx...@yahoo.com]

The late 5th Duke of Aosta had 3 children from his marriage to Princess Claude of Orleans, Bianca (b. 1966), Aimone, the 6th Duke (b. 1967) and Mafalda (b. 1969).

He also had  a daughter, Ginevra (b. 2006) , from a relationship with Kyara van Ellinkhuizen.

My question is this: is he also the biological father of Marchese Don Pietro Incisa della Rocchetta, consignore di Rocchetta Tanaro (b. Nov. 30, 1967) from a relationship with Nobile Nerina Corsini?

DPB 2008 and thepeerage.com only list the first four as his children.  However, the Marchese is listed as his child on Marlene Eilers Koenig's Royal Musings site and on the genealogics.org page.

Thanks for everyone's help.

Brooke

[bx...@yahoo.com]

Here's the obit for the 5th Duke, on the Royal Musings' site:

https://royalmusingsblogspotcom.blogspot.com/search?q=5th+Duke+of+Aosta

Brooke