Ezra might sound like a female name, but it is actually a Hebrew boy's name meaning "helper." I believe it initially came from the name Azariah. Besides Ezra Pound, the famous poet, and Ezra Jack Keats, the children's lit author, the most well known Ezra is from the 5th century b.c. and wrote the Book of Ezra and two chronicles. He was a Jewish priest, copyist, scholar and historian who began compiling and cataloguing the Old Testament. He led a group of Israelites out of exile in Babylon. A little lesser known are Ezra Cornell and Ezra Taft Benson. I believe it has been getting more recent attention due to the character named Ezra on the TV show "Pretty Little Liars." This character, Ezra Fitz, bears a strong resemblance to Abercrombie & Fitch's Ezra Fitch. There is also the 90's band Better Than Ezra, and you might not remember them until you search for their song "Good" on YouTube.
There were 1,416 baby boys born in 2010 with the name Ezra, ranking at #243, and 55 born spelled Ezrah. There were also 88 baby girls named Ezra in 2010, and 16 spelled Ezrah. Although Ezra comes with a masculine nickname of Ez, many people see or hear the "a" ending and assume Ezra is a female name.