Lucius Caecilius Metellus Diadematus was the second son of Roman politician and general Quintus Caecilius Metellus Macedonicus . Caellilius Metellus Diadematus was the second son of Roman politician and General Quintus Caecilius Metellus Macedonicus . Quintessus Caecilius Metellus Macedonicus was the second son of Roman politician and General Lucius Caecilius Metellus Diadematus .