Guilherme de Andrade e Almeida was a lawyer, journalist, film critic, poet, essayist and Brazilian translator. He helped popularize the Japanese poem style, haiku, in Brazil.
He is the son of Estevão de Araújo Almeida, a law teacher and jurist, and Angelina Andrade Almeida.
He married Belkiss Barroso de Almeida, and they had a son, Guy Sérgio Haroldo Estevão Zózimo Barroso de Almeida, who married Marina Queiroz Aranha de Almeida.
He fought in the Constitutionalist Revolution of 1932. His greatest work of love to São Paulo was his poem, Nossa Bandeira, but he also wrote Moeda Paulista and the poignant Oração ante a última trincheira. He was proclaimed The poet of the Revolution.
He also wrote the letter "Canção do Expedicionário" with music by Spartaco Rossi and pracinhas brasileiros in World War II.