Tverai is identified with Tviriment Castle, mentioned in 1251 by the Hypatian Codex.
Until recent times the first known document mentioning Zdzitaŭ was the Hypatian Codex of 1252.
Codex Sinaiticus | codex | Codex Vaticanus | Lorsch codex | Codex Bezae | Codex | Roda Codex | Leningrad Codex | Hypatian Codex | Codex Washingtonianus | Codex Vercellensis | Codex Tchacos | Codex Sangallensis 878 | Codex Calixtinus | Codex Borgia | Codex Beratinus | Codex Aureus of Lorsch | Codex Atlanticus | Codex Argenteus | Codex Amiatinus | Paris Codex | Nowell Codex | Montpellier Codex | List of food additives,'' Codex Alimentarius | List of food additives, Codex Alimentarius | Dresden Codex | Codex (Warhammer 40,000) | Codex Vyssegradensis | Codex Vaticanus Ottobonianus Latinus 1829 | Codex Theodosianus |