Johnny Cash and June Carter Cash
They were a duet who became a duo, whose love story was filmed, with Joaquin Phoenix and Reese Witherspoon, as Walk The Line. June was singing with her mother and sisters when, in 1950, they were invited to join the Grand Ole Opry company in Nashville, Tennessee. Johnny joined the company in 1956. They took their time getting together. He was married (to Vivian Liberto) until 1966; they had four daughters. June was also inconveniently married, to a honky-tonk singer called Carl, then to a football player and cop called Rip. She and Johnny (above) only began to get serious off-stage in the early 1960s. June wrote the song "Ring of Fire" about their mutual realisation that this might be it. Johnny proposed to her, live on stage, in London, Ontario, in 1968, and they married a week later. They had one child, John Jnr, together, but six more through previous relationships, and their relationship thrived and endured. They died four months apart and are buried together in Hendersonville, Tennessee, their home for all of their 35 years together.