Complex sentence: The winds receive their name after Samuel Cromwell, a sailor from the 19th Century, believed to be a pirate, who visited La Paz very often and, legend says, hid one of his biggest treasures on the beach that carries his name.
Split into simpler sentences: The winds receive their name after Samuel Cromwell, a sailor from the 19th century, believed to be a pirate. He visited La Paz often and, according to legend, hid one of his biggest treasures on the beach that carries his name.