Bianco da Siena

From wikipedia: Bianco di Santi alias Bianco da Siena or Bianco da Lanciolina (Anciolina, c1350 - Venice, 1399) was an Italian mystic poet and an imitator of Jacopone da Todi. He wrote several religiously-inspired poems (lauda) that were popular in the Middle Ages. First a wool carder, he eventually became a member of the poor Jesuates, founded by Giovanni Colombini.