James Monroe, U. S. President
Apr. 28, 1758-July 4, 1831

Lives of the Presidents: Fame, Shame (and What the Neighbors Thought) by Kathleen Krull, illustrated by Kathryn Hewitt (Harcourt, 1998)
One paragraph in this collective biography is devoted to our 5th president. The Monroe Doctrine was named for him. He was one of three presidents to die on July 4th.
The White House offers a profile of Monroe on their site.
Ulysses S. Grant, U.S. President
Apr. 27, 1822-July 23, 1885

Lives of the Presidents: Fame, Shame (and What the Neighbors Thought) by Kathleen Krull, illustrated by Kathryn Hewitt (Harcourt, 1998)
A military man, Grant was the 18th president and one of few words.
Learn more about Grant at the PBS American Experience site about him.
Sergei Prokofiev, musician
April 23, 1891-March 5, 1953

Lives of the Musicians: Good Times, Bad Times (and What the Neighbors Thought) by Kathleen Krull, illustrated by Kathryn Hewitt (Harcourt, 1993)
The Russian composer of Peter and the Wolf, dreamed of composing from an early age.
A collection of articles about Prokofiev can be found at The New York Times.
Isabella I, political leader
Apr. 22, 1451-Nov. 26, 1504

Lives of Extraordinary Women: Rulers, Rebels (and What the Neighbors Thought) by Kathleen Krull, illustrated by Kathryn Hewitt (Harcourt, 2000)
As Queen of Spain, Isabella I financed the travels of Christopher Columbus.
Learn more about Isabella of Castile at Wikipedia, the free encyclopedia.
Charlotte Bronte, writer
Apr. 21, 1816-Mar. 31, 1855

Lives of the Writers: Comedies, Tragedies (and What the Neighbors Thought) by Kathleen Krull, illustrated by Kathryn Hewitt (Harcourt, 1994)
The author of Jane Eyre, was the eldest of the three Bronte sisters, all English writers.
A brief biography of Bronte can be found on the Victorian Web.org, a site about literature, history and culture in the age of Victoria.