Some authorities believe that this coat of arms was brought to Poland from Germany by a knight named Zylberschweg or Zelberszwecht.
It is, however, one of the oldest Polish coats of arms, whose clan's war cry was Grzymała (for Thunder).
This augmentation was received by Przecław Grzymała, for his courageous defense of the city Płock in 1078 against the Jatwings from Prince Władisław Hermann.
Subsequently the coat of arms was also abated: Prince Boleslaw Wstydliwy of Poland (1127–1179), exiled the knight Grzymała, owner of Goślice in the Palatinate of Płock, on the suspicion of treacherous dealings with Prince Kazimierz of Kujaw, and as further evidence of the Prince's displeasure closed the gate in this knight's coat of arms.
A second (though positive) abatement also occurred: When the Lithuanians along with the Jatwings attacked Masovia, a Grzymała, owner of Zielony and Slasy, courageously stood against them, inflicted a defeat upon them and hunted them down.