fidus Achates

We are there with the Americans not just because it is our function to be their loyal lieutenant, the fidus Achates of Washington.

Fidus Achates came to an understanding With Queen Lavinia, who had motives of her own.

HI Lovat came in slowly, and with him his inevitable interpreter, his fidus Achates, Sergeant Hutton.

His FIDUS ACHATES!

He was a commander in the West under William Waller, being nicknamed his fidus Achates, and led his cuirassiers, who were known as the London lobsters.

In the Aeneid, Achates ("good, faithful Achates", fidus Achates as he was called) was a close friend of Aeneas; his name became a by-word for an intimate companion.