Friends and visitors before and after his death clipped locks of his hair, some of which have been preserved and subjected to additional analysis, as have skull fragments removed during the 1862 exhumation.
Amigos e visitantes de antes e despois da morte cortaron mechóns do seu pelo, algúns dos cales foron conservados e analizados, ademais de ter fragmentos do cranio sacados durante a exhumación de 1862.