Athenian governance and culture are reconstructed from the Bronze Age into the historical era based on traditions, archaeological contexts and remains, foremost the formal commensal and libation krater. Following Mycenaean immigration from the Peloponnesos during the transitional years, changes in governance are observable. Groups under aristocratic leadership, local and immigrant, aspired to coexist under a surprisingly formal set of stipulations that should be recognized as Athens' first constitution. Synoikismos did not refer to a political union of Attica, sometimes attributed to Theseus, but to a union of aristocratic houses (oikoi). The union replaced absolute monarchy with a new oligarchical-monarchy system, each king selected from one of the favoured aristocratic houses and ruling for life without inheritance. The system prevailed through the late eleventh to the mid-eighth c. and is corroborated by Athenian traditions cross-referenced with archaeological data from the burial grounds, and a formerly discredited list of Athenian Iron Age kings. Some burial grounds have been tentatively identified as those of the Melanthids, Alcmeonids, Philaids and Medontids, who settled the outskirts of Athens along with other migrant groups following the decline of the elite in the Peloponnesos. While the Melanthids left during the 11th c. Ionian Migration other aristocratic houses remained and contributed to the evolution of the historical era polis of Athens. One noble family, the Alcmeonids preserved their cemetery into the Archaic period in a burial record of 600 years' duration. Incorporated into this work is a monograph on the Athenian formal krater used by these primarily Neleid aristocratic houses in assembly and ritual. Some Homeric practices parallel those found in Athens, so the Ionic poets may have documented customs that had existed on the Mainland and were transferred to Ionia during the Ionian Migration. The demise of both the constitution and the standard, ancestral krater in Athens following a mid-eighth c. watershed is testimony to an interval of political change, as noted by Ian Morris, before the systematized establishment of annual archonship in the following century. The support this research has given to the validity of the King List has resulted in a proposed new chronology, with an earlier onset for the Geometric period at 922 BC, rather than the currently accepted 900 BC. The relative chronology of Coldstream based on style is generally accepted here, but some intermediate stages are revised based on perceptible break data, such as the onset of a new kingship, a reported war, or the demise of a governance system.