The name of the Danish flag, the Dannebrog, meaning ‘the flag of the Danes’ or ‘the red flag’, is first encountered in a Danish text from 1478 and in a Netherlandish text from 100 years before that.
In a Netherlandish armorial (Gelre) from 1370-1386 a red banner with a white cross is annexed to the coat of arms of Valdemar IV Atterdag.
According to legend, the Dannebrog fell from heaven during a battle in Estonia; this legend is mentioned in Christiern Pedersen’s Danish Chronicle from the beginning of the 1520s and by the Franciscan monk Peder Olsen c. 1527. This latter relates the event to a battle in 1219, and tradition has maintained that the flag appeared at Lyndanisse on 15 June 1219.
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