George Dunlop Leslie's "Her First Place". Original can be seen HERE.

original: http://www.artrenewal.org/asp/database/image.asp?id=31767

Rear-Admiral Sir Horatio Nelson by Lemuel Francis Abbott (1800)

Billy Bouguereau wasn't all that keen on the local taggers, so this got cropped

sources: Vermeer's Little Street | Moped | City | Door |

Sources http://content.cdlib.org/xtf/data/13030/d9/ft1d5nb0d9/figures/ft1d5nb0d9_00063.jpg
http://www.dialogica.com.ar/unr/epicom/archives/velasquez-1656-las-meninas.jpg

Monet's water lillies extended with a shot I took of a favorite lake. Can you find the edges of Monet's painting?
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sources

Henry VIII was vain enough to never have had his portrait painted with one of his 6 wives.
In fact he beheaded a couple of them. This is what it would have looked like if he had one painted with his 4th wife Anne of Cleves.

There is definitely one person too much...

Paintings:
'Berber Woman' by Emile Vernet-Lecomte, 1870/'Slave of Love and Light of my Eyes' by Etienne Dinet, 1907
Details
Sources