Quinn was married to Irish businessman and impresario William "Bill" Fuller (1917–2008); the marriage eventually ended in divorce. Quinn never remarried.Bill Fuller obituary, The Guardian; 9 September 2008. Retrieved 14 November 2014. The couple had four children, Michael, Jane, Terry and Sean. Michael predeceased his parents, dying from an undiagnosed cardiac ailment in 1988, aged 31.Re death of son, Michael Fuller, People. Retrieved 4 August 2015.
