Which character from Spanish literature had an issue with a windmill?

"The Clever Gentleman Sir Quixote of La Mancha", or just "Don Quixote", is a Spanish novel by Miguel de Cervantes. Published in two parts, in 1605 and 1615, "Don Quixote" is the most influential work of literature from the Spanish Golden Age and the entire Spanish literary canon. A founding work of Western literature, it is often labeled "the first modern novel" and is sometimes considered the best literary work ever written.

After a short period of feigning health, Don Quixote requests his neighbour, Sancho Panza, to be his squire, promising him a petty governorship. Sancho is a poor and simple farmer but more practical than the head-in-the-clouds Don Quixote and agrees to the offer, sneaking away with Don Quixote in the early dawn. It is here that their famous adventures begin, starting with Don Quixote's attack on windmills that he believes to be ferocious giants.