Ah well. You win some, you lose some I guess. I'll make sure to not forget this in the future Elusives in Sapienza.
It was kind of a fun character to follow. At one point he notes that Silvio has "On the Origin of Species" in his library and comments something to the effect of "We won't have that when I'm president."
Luckily, he never will be.
I also quite liked the italian accent on the dude guiding him around. I'm no expert, but it sounded italian to me without sounding like a parody of it. Well done. Too bad not all spoken audio is like this.
Added by Edit:
The way I got rid of his bodyguards was more or less luck. I put rat poison in the wine in the cellar, expecting him to go spew by his lonesome. Instead both guards went in with him. I did notice noone else was around though, so I lured one out with a coin and knocked him out (throwing a wrench) and hid the body quickly. Shortly thereafter the guide reappeared and the continued, but I managed to get the second guard to stay behind to inspect a coin noise, and took him out as well.