Did Langston Hughes live in the Harlem Renaissance era?
No, he isn't. There isn't a "father" of the Harlem
Renaissance.
Langston Hughs was just one of the luminaries of that period,
along with such greats as Countee Cullen, Rudolph Fisher, Zora
Neale, Claude McKay, etc.
All these artists helped make the Harlem Renaissance what it
was, and all were contemporaries of each other.
However, Langston Hugh was influenced by Claude McKay, who wrote
"If We Must Die" which was published 1919, two years before Hughs
arrived in New York City.