During the 1383–1385 Portuguese interregnum, one of the emerging candidates to the throne was John, master of the Order of Aviz, an illegitimate son of King Peter I of Portugal. John was elected Regent and Defender of Kingdom in 1383 and acclaimed King of Portugal in 1385, as John I and during his reign the royal Portuguese shield was added to by the inclusion of the insignia of the Order of Aviz, namely a " cross flory vert" (a green cross with a fleur-de-lys at the end of each arm). This was effected in various ways: by insertion within the bordure, alternating with the castles; more commonly inserted within the shield, and occasionally shown outside the shield with the latter laying over it.