Conversation so far:
Where did John Adams practice law?
Harvard
What happened after John Adams practiced law at Harvard?
In 1758, he earned an A.M. from Harvard, and was soon admitted to the bar, having completed his studies under Putnam.
When did John Adams get married?
10/25/1764
Did John Adams and his wife have children?
John and Abigail had six children.
Who are John Adams and his wife's children?
Abigail Nabby in 1765, future president John Quincy Adams in 1767, Susanna in 1768, Charles in 1770, Thomas in 1772, and Elizabeth in 1777.

Question: What else is singnificant about their marriage?
Self-contained rewrite: What else is signficant about John Adams and his wife's marriage?