Full text in english translation at Paul Halsall's Sourcebooks. A libellus by Procopius about Justinianus and his wife Theodora, the Nika revolt, etc...
Full text in english translation at Paul Halsall's Sourcebooks. Anna was the daughter ot Alexius I (hence, Alexias is the title of her history account).
Full text in english translation, at Paul Halsall's History Sourcebooks. The text of Villehardouin is long, you may read the subtitles to just take a glimpse on the 1204 events at Constantinople and various greek cities caputred by the westerners.
Full text in english translation at Paul Halsall's Sourcebooks. Including a chapter on Uzbeg Khan, sultan of Turks and his wife, a byzantine princess. The author accompanies her at Constantinople and meets the emperor, goes to Hagia Sophia and tours the city.
12th century folksong: the epic cycle about ΔIΓENHΣ AKPITAΣ [δije`nis a`kritas] - Digenis Akritas, and the byzantine boarder soldiers. Di-genis means bi-genus, referring to his double parentage: greek and arabic.