Miguel Hernández was a Spanish poet who wrote during the early 20th century. One of his most famous poems is "Nanas de la Cebolla" or "Lullabies of the Onion", which describes a mother singing to her children while peeling onions. The poem uses the imagery of cutting onions to represent the tears and hardships of life. It is considered one of Hernández's most memorable works for its simplicity and ability to convey profound emotion.