Coat of arms of Princess Augusta of Saxe-Gotha, wife of w:Frederick, Prince of Wales (1707-1751), the eldest son and heir apparent of King George II of Great Britain, whom he predeceased. She was the mother of King George III. Princess Augusta was born in Gotha to w:Frederick II, Duke of Saxe-Gotha-Altenburg (1676–1732) and w:Magdalena Augusta of Anhalt-Zerbst (1679–1740). Her paternal grandfather was w:Frederick I, Duke of Saxe-Gotha-Altenburg, eldest surviving son of Ernest I, Duke of Saxe-Gotha-Altenburg.
SVG elements from

Caroline of Brandenburg-Ansbach.svg
Blason Duché de Saxe-Altenbourg (Grandes Armes).svg
A1 Aardvark