Conversation so far:
Who raised O'Neill?
CANNOTANSWER.
Was was his family life like?
O'Neill was married to Kathleen Jenkins.
Did they have children together?
time they had one son, Eugene O'Neill, Jr.
What was life like with Jenkins?
CANNOTANSWER.
Was Jenkins his only spouse?
O'Neill met Agnes Boulton, a successful writer of commercial fiction, and they married.

Question: What his marriage wto Boulton like?
Self-contained rewrite: What was O'Neill's marriage like with Boulton?