Vegoia (Etruscan: Vecu) is a nymph and/or sibyl within the Etruscan religious framework who is responsible for writing some parts of their large and complex set of sacred books, of initiating the Etruscan people to the arts, originating the rules and rituals of land marking, and presiding over the observance, respect and preservation of boundaries.
Vegoia is also known as Vecu, Vecui, Vecuvia, Vegoe or else Begoe or even Bigois as it sometimes appears. (see: List of Etruscan mythological figures).
The actual Etruscan religious system remains mostly obscure. The Etruscan language is poorly understood, due to the lack of many bilingual documents comparable to the Rosetta stone. Therefore, the ancient Etruscan documents (8th, 7th, 6th centuries BCE) that would reflect their own proper conceptions do not yield much. Moreover, during the later period (5th through 1st centuries BCE) Etruscan civilization heavily incorporated elements of Greek civilization and eventually diluted itself in the Greco-Roman mixture of their powerful Roman neighbours. Lastly, while they formalized their religious concepts and practices in a series of "sacred books", most are no longer extant and known only through commentaries or quotes by Roman authors of the late 1st century: and hence may be biased.
Two mythological figures have been set by the Etruscans as presiding over the production of their sacred books: a female figure, Vegoia, and a monstrous childlike figure gifted with the knowledge and prescience of an ancient sage, Tages. Those books are known from Latin authors under a classification pertaining to their content according to their mythological author (whether delivered through speeches or lectures, such as Tages, or inspiration).
The revelations of the prophetess Vegoia are designated as the Libri Vegoici, which included the Libri Fulgurales and part of the Libri Rituales, especially the Libri Fatales.
The figure of Vegoia is almost entirely blurred in the mists of the past. Vegoia is mostly known from the traditions of the Etruscan city of Chiusi (Latin: Clusium; Etruscan: Clevsin; Umbrian: Camars)(nowadays in the province of Siena).
She is barely designated as a “nymph”, as the writer of the Libri Fulgurales, which give the keys to interpreting the meaning of lightning strokes sent by the deities (using a cartography of the sky, which, as a sort of property division, was attributed to Vegoia; this assignment of sectors of the horizon to various deities is paralleled in the microcosm that is the liver of a sacrificed animal. The sacred divisions seem also to have a correspondence in the measurement and division of land, which since the very dawn of Etruscan history obeyed religious rules), as teaching the correct methods of measuring space in the Libri Rituales, and as lording over their observation under threat of some dire woe or malediction, thus establishing her as a power presiding over land property and land property rights, laws and contracts (as distinct of commercial contracts laws).