ist . ▁It ▁was ▁inspired ▁by ▁the ▁American ▁flag ▁and ▁the ▁British ▁Red ▁En sign . ▁Since ▁the ▁ 1 9 2 0 s , ▁the ▁flag ▁has ▁become ▁very ▁popular ▁and ▁it ▁is ▁flow n ▁from ▁a ▁large ▁number ▁of ▁institutions . ▁A part ▁from ▁the ▁er mine ▁flag , ▁Bre ton ▁historic ▁b ann ers ▁include ▁the ▁K ro az ▁Du , ▁a ▁white ▁flag ▁with ▁a ▁black ▁cross , ▁the ▁perfect ▁negative ▁of ▁the ▁Corn ish ▁flag . ▁ ▁The ▁coat ▁of ▁arms ▁of ▁Brit t any , ▁er mine ▁plain , ▁was ▁adopted ▁by ▁John ▁III ▁in ▁ 1 3 1 6 . ▁Er mine ▁had ▁been ▁used ▁in ▁Brit t any ▁long ▁before , ▁and ▁there ▁is ▁no ▁clue ▁about ▁its ▁origin . ▁It ▁was ▁probably ▁chosen ▁by ▁the ▁du kes ▁because ▁of ▁its ▁similarity ▁with ▁the ▁French ▁fle ur - de - lis . ▁The ▁er mine , ▁or ▁sto at , ▁as ▁an ▁animal ▁became ▁the ▁bad ge ▁of ▁John ▁IV ▁at ▁the ▁end ▁of ▁the ▁ 1 4 th ▁century . ▁It ▁appeared ▁later ▁on ▁numerous ▁locations , ▁including ▁churches ▁and ▁cast les . ▁According ▁to ▁popular ▁trad itions , ▁Anne ▁of ▁Brit t any ▁was ▁hunting ▁with ▁her ▁court ▁when ▁she ▁saw ▁a ▁white ▁er mine ▁who ▁preferred ▁to ▁die ▁than ▁to ▁cross ▁a ▁dirty ▁mar sh . ▁This ▁episode ▁would ▁have ▁inspired ▁the ▁duch ess ' ▁mot to ▁: ▁" P ot ius ▁mor i ▁qu am ▁fo ed ari " ▁(" r