Decimus Junius Silanus was a Consul at the time of the Roman Republic. Probably he is a son of Marcus Junius Silanus, consul in 109 BC. He was also the stepfather of Marcus Junius Brutus, because he married his mother Servilia. biography
In 70 BC. became Silanus aedile, but lost the election to the consulate seven years later. However, he was appointed as Consul suffectus and was asked for his opinion about Lucius Sergius Catilina by Cicero. The following year he was elected consul together with Lucius Licinius Murena. Among them were the lex Junia Licinia and the lex Caecilia Didia introduced. Sources
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