Also, were any royals infamous for having deceptive portraits?
So the wedding wasn't cancelled, but Henry VII felt deceived by the portrait of his 4th wife, Anne of Cleves. It should be noted here that Anne was Henry's first and only wife that he didn't see before the engagement , as his first wife (Katherine of Aragon) was his brother's widow and his other 4 wives had been members of court before their marriage. Meanwhile Anne of Cleves was a match made for purely political reasons. The marriage was arranged by Thomas Cromwell, who felt Henry should marry a Protestant princess after his break with the Catholic Church to marry Anne Boleyn. Henry sent painter Hans Holbein to paint her portrait and decided to marry Anne after seeing it.
Then Anne arrived at court, and Henry clearly felt that he had been deceived as he felt the portrait was inaccurate and was not attracted to Anne (he also felt she was "unsophisticated"). The marriage still happened, but was eventually annulled due to lack of consummation. The two did go on to have a close friendship and Henry married teenager Katherine Howard.