War of Jenkins’ Ear, war between Great Britain and Spain that began in October 1739 and eventually merged into the War of the Austrian Succession (1740–48). It was precipitated by an incident that took place in 1738 when Captain Robert Jenkins appeared before a committee of the House of Commons and exhibited what he alleged to be his own amputated ear, cut off in April 1731 in the West Indies by Spanish coast guards, who had boarded his ship, pillaged it, and then set it adrift. Public opinion had already been aroused by other Spanish outrages on British ships, and the Jenkins episode was swiftly exploited by members of Parliament who were in opposition to the government of Robert Walpole.