The wife of which king gave birth to a daughter who supposedly had an illegitimate child as a young girl?
Charlotte of Mecklenburg-Strelitz Charlotte of Mecklenburg-Strelitz (Sophia Charlotte; 19 May 1744 – 17 November 1818) was by marriage to King George III the Queen of Great Britain and Ireland from her wedding in 1761 until the union of the two kingdoms in 1801, after which she was Queen of the United Kingdom of Great Britain and Ireland until her death in 1818. She was also the Electress of Hanover in the Holy Roman Empire until the promotion of her husband to King of Hanover on 12 October 1814, after which she was also queen consort of Hanover.
Berengaria of Castile Berengaria (Castilian: "Berenguela"; nicknamed the Great (Castilian: la Grande); 1179 or 1180 – 8 November 1246) was queen regnant of Castile in 1217 and queen consort of León from 1197 to 1204. As the eldest child and heir presumptive of Alfonso VIII of Castile, she was a sought after bride, and was engaged to Conrad, the son of Holy Roman Emperor Frederick I Barbarossa. After his death, she married her cousin, Alfonso IX of León, to secure the peace between him and her father. She had five children with him before their marriage was voided by Pope Innocent III.