William Walker (1824-1860) was the most famous of American filibusters. He led an expedition to conquer Northwestern Mexico, and in the 1850s conquered and became president of Nicaragua. After crossing Cornelius Vanderbilt, he was driven from Nicaragua by Central American armies. While attempting to re-invade Central America, he was captured and executed in Honduras in 1860.
Most of this was new to me. It's amazing how few Americans know who William Walker was, though he is standard history-instruction material in Mexico. This is a great insight into the history of American imperialism and the geopolitics of 19th-century Central America. I wish there were more recent books on Walker. Anyone know of one?