Sir Thomas Brisbane succeeded Macquarie as governor of New South Wales in 1821. Brisbane had applied for the job in 1815, but since the position was not open he had to wait until 1821 to become governor. His appointment as governor to New South Wales was based solely on his friendship with the Iron Duke. When he first proposed that he wanted to become governor of NSW to Wellington in Paris in 1815 Wellington replied that Bathurst would be looking for someone who could govern not the heavens but the earth in New South Wales.
Brisbane persisted, and Wellington used his influence to secure the job for Brisbane, which caused a minor stir, fearing that he would be more interested in star-gazing then the well being of those who lived under his control. Brisbane’s journals betrayed how his mind was set on another heavenly goal, and his fixation with his immortal soul which would have unsettled his opponents even more.
So let’s say that Wellington his able to persuade Brisbane not to pursue his dream of governing NSW. Who else is there that Bathurst or Wellington could choose to become the new governor of New South Wales? Surely someone with a bit more knowledge of post-1815 British politics (the regency right?) would know of a few candidates?