The great African-American Harlem Renaissance writer Langston Hughes put this one on the map; actor Laurence Fishburne adopted it for his now grown son, born in 1987. Despite these popular associations, the name didn't make it into the US Top 1000 until 2013. It rose slightly in 2014. This name is even less used in England or Wales, where in 2013 no births were registered using this name.
Hughes was born James Mercer Langston Hughes, Langston being his mother's maiden name.
Some similar choices are Lanford, Landon, Langford and Langley.