Answer the following question: What type of details about raymond fernandez and martha beck can be gathered from the following bio? Bio: raymond martinez fernandez -lrb- december 17 , 1914 -- march 8 , 1951 -rrb- and martha jule beck -lrb- may 6 , 1920 -- march 8 , 1951 -rrb- were an american serial killer couple . they are believed to have killed as many as 20 women during their murderous spree between 1947 and 1949 . after their arrest and trial for serial murder in 1949 , they became known as '' the lonely hearts killers '' for meeting their unsuspecting victims through lonely hearts ads . a number of films and television shows are based on this case .
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- death place - charge - conviction status - image name - conviction penalty - death date - children - birth date - name - birth place - occupation