From the mythical story of the war of the Pallantidae against Theseus, we learn that the demoi of Pallene, Gargettus, and Agnus were adjacent.
[10] In one of the churches nearby, George Finlay found the following inscription fragment: ΞΕΟΦΑΝΗΣ ΠΑΛΛΗΝΕΥΣ - XEOPHANES PALLENEUS.
This situation, where the roads of the Mesogaea necessarily unite in approaching Athens, is such a point as would be important, and often occupied in military operations; and accordingly, we find that on three occasions in the early history of Athens, Pallene was the scene of action; first, when Eurystheus fought against the Athenians and Heracleidae; again, when Theseus was opposed to the Pallantidae; and a third time when Peisistratus defeated the Alcmaeonidae.
Agnus is placed by Ludwig Ross in the hollow which lies between the extreme northern point of Hymettus and Ieraka.
William Martin Leake, on the other hand, fixes it at Markópulo, in the southern part of the Mesogaea, because Finlay found at this place an inscription, .... υλίδης Ἀγνούσιος - ... ylides Agnousious.