Conversation so far:
What year was Ralph Waldo Emerson born?
Ralph Waldo Emerson was in 1803.
Who was Ralph Waldo Emerson's father?
Ralph Waldo Emerson was son of the Rev. William Emerson, a Unitarian minister.
Was Ralph Waldo Emerson the only child of his parent?
Ralph Waldo Emerson was the second of five sons who survived into adulthood; Three other children died in childhood.

Question: What school did he attended?
Self-contained rewrite: What school did Ralph Waldo Emerson attended?