 By not replacing the slain senators, and not consulting the senate on matters of government, he diminished both the size and the authority of the senate.In another break with tradition, Tarquin judged capital crimes without the advice of counselors, causing fear amongst those who might think to oppose him.He made a powerful ally when he betrothed his daughter to Octavius Mamilius of Tusculum, among the most eminent of the Latin chiefs.