Marcus Mumford is married to actress Carey Mulligan. They have been married since 2012 after reconnecting as adults after being childhood pen pals. The couple first met at a Christian youth camp as pre-teens and later reunited, got engaged within five months, and married on a farm in Somerset, England. They have three children together. Their relationship is known to be private, though they support each other's careers and share a strong bond that began in childhood.