Conversation so far:
What was Phineas Gage recovery like?
Despite Phineas Gage own optimism, Gage's convalescence was long, difficult, and uneven
Did Phineas Gage fully recover?
hough a year later some weakness remained, Harlow wrote that physically, the recovery was quite complete during the four years immediately succeeding the injury“

Question: What happened to him next?
Self-contained rewrite: What happened to Phineas Gage next?