But also historically inaccurate. As Cassius Dio says in book 69: "he would have carried out".
There is never an ancient claim that Caligula named his hourse a consul or a senator.
"One of the horses, which he named Incitatus, he used to invite to dinner, where he would offer him golden barley and drink his health in wine from golden goblets; he swore by the animal's life and fortune and even promised to appoint him consul, a promise that he would certainly have carried out if he had lived longer."
Suetonius adds: "To prevent Incitatus, his favourite horse, from growing restive he always picketed the neighbour-hood with troops on the day before the races, ordering them to enforce absolute silence. Incitatus owned a marble stable, an ivory stall, and a jewelled collar; also a house, furniture, and slaves - to provide suitable entertainment for guests whom Caligula invited in its name. It is said that he even planned to award Incitatus a consulship."
A good trap for the rip-off merchants to fall into!
Richard.