Can we draw the following hypothesis from the context? 

Context:

General Francisco Javier Castaños Aragorri Urioste y Olavide, Count of Castaños y Aragones, 1st Duke of Baylen (es: "Don Francisco Javier Castaños Aragorri Urioste y Olavide, Conde de Castaños y Aragones, primer Duque de Bailén."; 22 April 1758 – 24 September 1852), was a Spanish general during the Peninsular War.

Hypothesis: The current Count of Castaños y Aragones is the Duke of Baylen.
It's impossible to say