When did Johann Schwalbach, Visconde de Setúbal die?

Schwalbach was an NCO with 5/60th who was commissioned into Portuguese service in 1808, went on to rise to general after the war, and was active in the civil wars of the 1820s and 30s. Until recently I thought he died in 1847 at a reasonable 73 years of age. But I have now found multiple sources saying 1874 making him an improbable 100 years old when he died. Do any Portuguese members have any idea which is right? @Rui Moura for instance? You can read my blog on Schwalbach here: https://daringdutycunningplans.wordpress.com/2020/06/27/the-very-long-life-of-johann-schwalbach/

Thanks,

Rob