The Charles Felix of Savoy reference article from the English Wikipedia on 24-Apr-2004
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Charles Felix of Savoy

Charles Felix April 6 1765-April 27 1831 was the Duke of Savoy, Piedmont, Aosta and King of Sardinia from 1821 to 1831

For all hereditary titles, check Vittorio Amedeo III.

He never married and thus died without issue.

Preceded by:
Vittorio Emanuele IV
House of Savoy Succeeded by:
Carlo Alberto