Their territory was on the north side of the Thames estuary in current Essex, Hertfordshire and Suffolk, and included lands now located in Greater London.

The next identifiable king of the Trinovantes, known from numismatic evidence, was Addedomarus, who took power c. 20–15 BC, and moved the tribe's capital to Camulodunum.

The Welsh Triads recall Aedd Mawr as one of the founders of Britain The Trinovantes reappeared in history when they participated in Boudica's revolt against the Roman Empire in 60 AD.

Their name was re-used as Trinovantum, the supposed original name of London, by Geoffrey of Monmouth in his largely fictional Historia Regum Britanniae, in which he claimed the name derived from Troi-novantum or "New Troy", connecting this with the legend that Britain was founded by Brutus and other refugees from the Trojan War.

In Chelmsford 123, a British television situation comedy produced for Channel 4 by Hat Trick Productions, the main character of Badvoc (played by Rory McGrath) was the leader of The Trinovantes.