As can be seen from the "Eques walachus" by Abraham de Bruyn 1576, and from the Wallachians in "Vera designatio Urbis in Littavia Grodnae" from Nuremberg 1568, the coat of arms associated with Wallachians (in the German lands at least) is the "lion rampant". See here:
http://www.vikingsword.com/vb/showpo...1&postcount=65
This is odd since Wallachia's coat of arms was the bird/eagle with a cross and usually flanked by the sun and crescent moon. You can see here the wax sigil by Voivode Mircea the Elder from 1390 (left) and the Wallachian coat of arms on a bronze cannon made locally during Voivode Petru Cercel reign 1583-85 (right).
This CoA was used right until Wallachia's unification with Moldova in 1859.
So why are these mid 16th century German depictions using the "lion rampant" CoA?
Well the answer may be in Ulrich von Richental's "Concilium zu Konstanz" Augsburg 1483. In it, we see 3 Wallachian cases as having a "lion rampant" CoA. It says "Der durchluchtig fürst hertzog dispott inder meren walachy des bottschafft kam mitt dem thobermur" (Ulrich Richental fol 135b)
Actually, we see this association a few more times: Conrad Grüneberg 1483; Virgil Solis 1555; Martin Schrot 1581.
There is also this seal atributed to Petru Cercel (that's news to me, gotta look more into that).
Coat of Arms of "Der Dobermur her[zog] in der Hinder Walachye", Chonick, cca. 1475 from Vienna, Austria.
Another Coat of Arms of "Thebemur aus der walachei" from Ulrich von Richental's Chronicle of the Council of Constance
Sources:
https://tiparituriromanesti.wordpres...nstanz-sec-xv/
http://www.hubert-herald.nl/HellasGreatValachia.htm
https://ro.pinterest.com/alin_alexan...nian-heraldry/