The axe murderer
For I am death and I ride on a pale horse
Diogo Alves (1810 – February 19, 1841) was a Spanish-born Portuguese serial killer. Between 1836 and 1840, he killed seventy people. The crimes he committed were all in the area of the águas livres aqueduct, thus earning the title "Aqueduct Murderer". He was sentenced to death and hanged on February 19, 1841. The head of the killer was separated from the body and placed in a flask to preserve it for scientific purposes, where it is now a tourist attraction.