It has been traced certainly to the 13th, and conjecturally to the 12th century.
Meyer, therefore, conjecturally puts the date of Zoroaster at 1000 B.C., as had already been done by Duncker (Geschichte des Altertums, 4 4, 78).
More lately she has by some been conjecturally recognized in a doubtful, though Leonardesque, portrait of a lady with a weasel in the Czartoryski collection at Prague.
Near it lie many remains of a primitive city, and about half a mile east is the rock-seat conjecturally identified with Pausanias' "Throne of Pelops."
Stubbs conjecturally identified the first part of the Gesta (r170-1177) with the Liber Tricolumnis, a register of contemporary events kept by Richard Fitz Neal, the treasurer of Henry II.
The origin of religion, however, can never be determined archaeologically or historically; it must be sought conjecturally through psychology.
The writer is not known; it has been conjecturally dated 1325.
Thus for instance when any feudal institution (be it Gothic, Norman, or Anglo-Saxon) eludes our deciphering faculty from the imperfect records of its use and operation, then we endeavour conjecturally to amend our knowledge by watching the circumstances in which that institution arose."
Whether he was a Greek, a Roman or a Goth we do not know; nor can we say when he wrote, though his work may be dated conjecturally in the early part of the reign of Theodoric the Great.