Focus on Democritus (Ribera) and analyze the History.
Although tradition has always recognized the character portrayed as Archimedes, due to the compass of his hand and the papers with geometric signs that surround him, Delphine Fitz Darby proposed in 1962 to identify him as Democritus, because of the frank smile he shows since, precisely, Democritus he is known as "the philosopher who laughs". It could then be the painting known as Philosopher with Compass, a work whose whereabouts is unknown and is known to have belonged to the Duke of Alcalá, Ribera's main client between 1629 and 1631. In any case, Archimedes or Democritus, the work would be the oldest of the paintings that make the series "Ragged Philosophers".The first documentary evidence of the work places it in El Escorial in 1764 and later it will become part of the collections of the Prado Museum where it is kept.
Democritus Archimedes