When did the name kelly become famous?

The name Kelly gained popularity in the United States during the mid-20th century, particularly in the 1960s and 1970s, as it transitioned from a surname to a widely used first name. It was influenced by cultural figures, including actress and singer Grace Kelly, whose fame in the 1950s helped popularize the name. Over the years, Kelly has remained a common name for both girls and boys, maintaining its appeal into the 21st century.