Amedeo Modigliani (July 12, 1884 – January 24, 1920)

                                                                                          

Portrait of a Young Girl

1915

One of the most noted Expressionists, Modigliani, in my opinion, painted some of the most jarring and uncomfortable portraits you can lay eyes on. Still absolutely beautiful and, if you'll pardon the apt cliche, haunting paintings. 

Portrait of Frank Burty Haviland

1914

Portrait of Diego Rivera

1914

The Beggar of Leghorn

1909