1830 AD., Great Britain, brass medal on William IV and Adaline.

Great Britain, brass medal on (the coronation ?) of William IV and Adaline, 1830 AD.,
Brass Medal (25 mm / 5,25 g),
Obv.: KING WILLIAM IV AND QUEEN ADALINE , their heads r .
Rev.: ASCENDED THE THONE ON JUNE 26 1830 , a crown surrounded by rays.
BHM# 1429 - Brass C, Silvered Brass RR . (thanks to "Constanius for the reference)

William IV (William Henry; 21 August 1765 – 20 June 1837) was King of the United Kingdom of Great Britain and Ireland and of Hanover from 26 June 1830 until his death on 20 June 1837. William, the third son of George III and younger brother and successor to George IV, was the last king and penultimate monarch of the House of Hanover.
He served in the Royal Navy in his youth and was, both during his reign and afterwards, nicknamed the "Sailor King". He served in North America and the Caribbean, but saw little actual fighting. Since his two older brothers died without leaving legitimate issue, he inherited the throne when he was 64 years old. His reign saw several reforms: the poor law was updated, child labour restricted, slavery abolished in nearly all the British Empire, and the Reform Act 1832 refashioned the British electoral system. Though William did not engage in politics as much as his brother or his father, he was the last monarch to appoint a Prime Minister contrary to the will of Parliament. Through his brother, the Viceroy of Hanover, he granted that kingdom a short-lived liberal constitution.
At his death William had no surviving legitimate children, though he was survived by eight of the ten illegitimate children he had by the actress Dorothea Jordan, with whom he cohabited for 20 years. At Kew on 11 July 1818, William married Princess Adelaide of Saxe-Meiningen, the daughter of the Duke of Saxe-Meiningen. At 25, Adelaide was half William's age.
William IV was succeeded in the United Kingdom by his niece, Victoria, and in Hanover by his brother, Ernest Augustus.
Adaline/Adeline is a variant of Adelaide used in Germany, so it could just be a slip, or perhaps Adelaide as we know her was called Adaline in Saxe-Meiningen. and her name was anglisised.