Ligitimate or Not? Married 13-year-old cousin?

Context:

Poe switched his focus to prose and spent the next several years working for literary journals and periodicals, becoming known for his own style of literary criticism. His work forced him to move among several cities, including Baltimore, Philadelphia, and New York City. In Baltimore in 1835, he married Virginia Clemm, his 13-year-old cousin. In January 1845 Poe published his poem, "The Raven", to instant success. His wife died of tuberculosis two years after its publication. He began planning to produce his own journal, The Penn (later renamed The Stylus), though he died before it could be produced. On October 7, 1849, at age 40, Poe died in Baltimore; the cause of his death is unknown and has been variously attributed to alcohol, brain congestion, cholera, drugs, heart disease, rabies, suicide, tuberculosis, and other agents.[3]

More:
http://en.wikipedia.org/wiki/Edgar_Allan_Poe