Red Dead Redemption

[G-Haven]

John Marston and his wife Abigail Marston share the same names as the second President of the United States and his wife, John Adams and Abigail Adams. Both families also had a son named John as well ("Jack" is a diminutive name for John) and both had a daughter die very early in their life.

http://reddead.wikia.com/wiki/John_Marston
http://reddead.wikia.com/wiki/Abigail_Marston
http://en.wikipedia.org/wiki/John_Adams
http://en.wikipedia.org/wiki/Abigail_Adams