Conversation so far:
what is marriage-a-la-mode?
Hogarth painted the six pictures of Marriage a-la-mode (National Gallery, London), a pointed skewering of upper-class 18th-century society.
what were the six pictures called?
The series, which is set in a Classical interior, shows the story of the fashionable marriage of Viscount Squanderfield.
who did viscount squanderfield marry?
the daughter of a wealthy but miserly city merchant, starting with the signing of a marriage contract at the Earl's mansion.
what was the next step after the signing?
ending with the murder of the son by his wife's lover.
Are there any other interesting aspects about this article?
Moral: don't listen to evil silver-tongued counselors; don't marry a man for his rank.

Question: and what else is moral?
Self-contained rewrite: and what else is moral about the article besides the William Hogarth's signing of a marriage contract at the Earl's mansion??