Dering Roll, c. 1270-1280. The Dering Roll is the oldest English roll of arms surviving in its original form. It was made between 1270 and 1280 and contains the coat of arms of 324 knights, starting with two illegitimate children of King John.
Flags Of The World. Stories Behind Them | These stories aren't 100%. In case of the Brazilian flag, in addition to representing the night sky over Rio on November 15th, 1889, the flag's 27 stars represent the 26 States and the Federal District - Brasilia. https://pt.m.wikipedia.org/wiki/Bandeira_do_Brasil