After his father's death, his eldest brother George inherited all his lands and titles, including the electorate. His father, as part of the conditions he had to fulfil to acquire an electorship, had adopted
primogeniture, thus disinheriting younger sons. Unlike his four elder brothers, Ernest Augustus did not oppose this change; consequently he got on well with George, who trusted him. Ernest Augustus was a prominent member of his brother's court at
Herrenhausen, in Hanover, receiving diplomatic visitors and taking an active role in the cultural interests of the court. His influence may have helped secure the position of
Kapellmeister for
Handel at court. (after 1777) With his
accession to the British throne, George moved to London and Ernest Augustus took on the mantle of the senior head of the family in Brunswick-Lüneburg. In this capacity, he became regent in all but name, and took on the duty of care for George's seven-year-old grandson,
Frederick Lewis, the future
Prince of Wales and father-to-be of
George III. Frederick was left in Germany as a diplomatic move, to reassure the populace and any ambitious neighbouring states of the family's continuing commitment to its German lands. == Prince Bishop ==