Domus Bjornaer is a secretive Mystery Cult, dedicated to protecting the wild places of the earth, and to developing the powers of the Heartbeast, an animal nature that all magi Bjornaer can assume in some form.

Prima is Falke Bjornaer, at Crintera.

Domus Bonisagi is a True Lineage, with two sub-lineages, deriving from the Founders Bonisagus and Trianoma. Magi Bonisagi are primarily researchers, striving to further the magical knowledge of Ordo Hermei. Magi Trianomae are primarily political magi and explorers, seeking to strengthen and expand Ordo Hermei.

Primus Bonisagi is Occultes, at Durenmar.

Domus Criamonis is a Mystery Cult dedicated to the pursuit of the Enigma, a vaguely defined concept of the ultimate truth of magic and cosmology. Magi of this Domus pursue one of several mystical Paths that lead them deeper into the Mystery of the Domus, and develop strange markings on their bodies, called stigmata, that represent their progress along the Path they are following. Seven of these paths have formal groups, called clutches, with a home conventum in one of the Tribunalia.

Prima Criamonis is Muscaria, at Caverna Umbrae Torquentes, which is the conventum of the Central Clutch, and home for magi on the Path of the Body.

Domus Ex Miscellanea is a Societas, a collection of disparate traditions, many of whom are looked down upon as mere hedge wizards by other magi in the Ordo Hermei. Magi Ex Miscellanea may possess unique talents and capabilities, however, some of which are not duplicable by Hermetic Magic.

Primus Ex Miscellanea is Ebroin, at Cad Gadu.

Domus Flambonis is a Societas of magi who value honor and martial ability. Magi Flambonis are among the most capable magical combat specialists in the Ordo Hermei, although they are by no means limited to only combat magic, and also pursue a variety of other interests.

Prima Flambonis is Ignatia, at Val Negra.

Magi of Domus Guernici are most commonly known through their common role as Quaesitores. However, a third of all Quaesitores are from other Domus, and a minority of Magi Guernici are not Quaesitores. Magi Guernici seek to continue the traditions established by their Founder, both magical and judicial. Following the example of their Founder, Magi Guernici are nearly universally Christian, and many are devoutly so.

Prima Guernici is Bilera, at Magvillus.

Domus Jerbitonis is a Societas of magi who pursue Beauty in all of its various manifestations. Magi Jerbitonis are artists, scholars, and diplomats, who are more likely than other magi to develop strong relationships in mundane society, and many are Gently Gifted.

Primus Jerbitonis is Andru, at Valnastium.

Gifted magi Merceris are very few in number. None of the Gifted magi are practicing Christians, and most are actively Pagan. With one exception, every Gifted magus of Domus Merceris is descended by blood (consanguinitatis) from the Founder Mercere. Magi of this Domus possess strange mystical talents, and are often regarded as eccentric by other magi.
Un-Gifted magi Merceris are known as Redcaps or Caduceatores, and serve a variety of vital roles in Ordo Hermei, from delivering messages between conventa, to trading in vis, books, and even discipuli.

Prima Merceris is Insatella, at Harco.

Domus Merinitae is a diverse and unorganized Domus, which is dedicated to understanding and encountering that which is Fae. Magi of this Domus may pursue any number of unique mysteries, most of which are built upon the foundation of Faerie Magic, a balancing of the Realms of Magic and Faerie.

Primus Merinitae is Handri, at Irencillia.

Magi of Domus Tremeris are the most organized, hierarchical, and disciplined within the Order. Domus Tremeris guides, supports, and leverages the careers of its magi. Following the tradition of their Founder, who developed Certamen with Bonisagus, magi Tremeris are talented duelists, and the best of them are the very best duelists in Ordo Hermei.

Prima Tremeris is Poena, at Coeris.

Domus Tytali is a Societas of magi who value individual character and ambition above the rules of society. Their boundless confidence and drive enables them to achieve great feats, and magi Tytali are among the most influential individual magi in Ordo Hermei. Their ambition and drive have led them to pursue darkness and vice in the past, however, and rumors persist that some of them still pursue power through evil means.

Prima Tytali is Asterses, at Fudaris.

Magi of Domus Verditii are the pre-eminent enchanters in Ordo Hermei. Their Mysteries enable them to craft items of superb quality and enchantments that are unequaled in power. These magi all suffer from the weakness of their Founder, however, and the vice of Hubris is an ever-present threat.

Primus Verditii is Stouritus, at Lemnosa.