Ever heard of this prominent Revolutionary War General?

I first came across this historical character in listening to David McCullough's "1776". 

He taught himself law and mathematics.  He was able and, like other prominent generals on the Patriotic side, a self-trained soldier. He was considered one of Washington's top generals.  He served the entire eight years of the Revolution.  Like Washington, he was able to parlay small means and resources to his advantage. His attitude towards the British was humane and even kindly.

He had prominent responsibilities in facing down the British in both Boston and New York.  He played significant roles in the Battles of Trenton, Brandywine, Guilford Courthouse and Germantown.  He served as Washington's Quartermaster General during the dark winter at Valley Forge. 

Washington awarded a few his key generals, such as Henry Knox and Alexander Hamilton, key positions in his Presidential administration.  So, where was General Nathaniel Greene and what happened to him?

He twice refused Washington's request to serve as Secretary of War instead electing instead to settle on his Georgia estate near Savannah, Georgia in 1785.  He died at 44 years old on the estate on June 19, 1786, of sunstroke.