No, not in that chamber. Here you have a very interesting essay about epitaphs in the Pantheon. Check page 11 , second chamber.
In other chambers titles are shown, but not in all of them.
https://dialnet.unirioja.es/descarga/articulo/5044087.pdf
The inscription will say: "Jaime. Alfonso XIII's son", in latin. Of course no mention to this "foreign pretension" titles.
Is that all it will say? No mention of him being Duke of Segovia?
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