Stephen Grover Cleveland (March 18, 1837 – June 24, 1908) was an American politician and lawyer who was the 22nd and 24th president of the United States, the first president in American history to serve two non-consecutive terms in office from 1885–1889 and again in 1893–1897.
In "Peter's Def Jam", the guys rob a bank, dressed as lesser known presidents. Cleveland dresses as Grover Cleveland, but blows his cover, by telling everyone his real name.
When Peter tells Donald Trump that he'll never be a great president compared to the likes of Franklin Delano Roosevelt or Abraham Lincoln in "Trump Guy", he also points to Cleveland before realizing that he doesn't know who he is. Cleveland reminds him but also points out that he married a girl that he'd raised since age 11, causing Stewie to note that he wouldn't be getting a musical.