she was a member of the Hanoverian dynasty

The Hanover dynasty succeeded the Stuart dynasty in Britain. King George I, a Hanoverian, became the monarch in 1714 following the death of Queen Anne, the last Stuart monarch.

The first Hanoverian English king was George I. He ascended to the throne in 1714 and was the Elector of Hanover before becoming King of Great Britain and Ireland. He was from the House of Hanover, a German royal house, and his reign marked the beginning of the Hanoverian dynasty in England.

That is the correct spelling of "Hanoverian" (a horse breed).

Hanoverian vereinsthaler ended in 1866.