Conversation so far:
What was robert's early life like?
Stewart had recurring health problems throughout his childhood.
What type of illness did he suffer from?
He left Cambridge due to an extended illness.
What else resulted from his illness?
his family elected to send him to The Royal School, Armagh, rather than to England for his secondary education.
How was his time in school?
he applied himself with greater diligence than expected from an aristocrat and obtained first class in his last examinations.
Did he have other accomplishments at school?
after returning to Ireland did not pursue further formal education.

Question: What did he do after returning to Ireland?
Self-contained rewrite: What did Robert Stewart do after returning to Ireland?