Countless exploits of what we all know he takes credit for the accomplishment of the others. He doesn't have anything to prove he is worthy of the you mention. He is nothing but impostor
His father is not the only responsible if his mother deemed Theobald unworthy of his title Lady Jade Dutchess of Burke can revoke his title and her sister Lady Sage will be the new ruler of the dukedom.
Also because of the incident of water melon the evidence of thievery is also proven. The under garment of Lady Jill is being used as an instrument for this so called rush of passion you mention
Funny you mention Sir Trent, I heard from Lady Jill that Sir Trent never plan on suing Tremolo in the first place. He mention to Lady Jill that he is the one who stopped Sir Tyballs on his stupid tantrum because of a ruined suit.
In the incident lady Jill also mention that there was a fire during one of the gathering in the dukedom, but Sir Trent denied any statement Sir Tyballs mention. Because of this Lady Jill and Sir Trent confronted Sir Tyballs and they've seen the what he did to the poor water melon