21.2
It is said, moreover, that he was in peril from the many who crowded upon him in their zeal and affection, and could hardly make his way for the crowd into the forum. He was declared tribune with othersAt this time the number of the popular tribunes was ten. (including Metellus), and seeing that the consular elections were attended with bribery, he berated the people; and in concluding his speech he swore that he would prosecute the briber, whoever he might be, making an exception only of Silanus because of their relationship. For Silanus was the husband of Cato’s sister Servilia.
21.3
For this reason he let Silanus alone, but he prosecuted Lucius Murena on the charge of having secured his election to the consulship with Silanus by bribery.Silanus and Murena were consuls in 62 B.C. Now, there was a law by which the defendant could set a man to watch the prosecutor, in order that there might be no secret about the material which he was collecting and preparing for the prosecution. Accordingly, the man appointed by Murena to watch Cato would follow him about and keep him under observation.