Leah Kunkel Leah Kunkel Leah Kunkel (born June 15, 1948) is an American singer, songwriter and entertainment law attorney. Leah Kunkel was born Leah Cohen on June 15, 1948 in Baltimore, Maryland. She is the younger sister of Cass Elliot from the folk rock vocal group The Mamas & the Papas. In 1968 she married American drummer and music producer Russ Kunkel. Following her sister's death in 1974, Kunkel was given custody of Cass Elliot's daughter, Owen. The couple also raised their son, Nathaniel, an Emmy Award winning sound engineer. After being signed to Dunhill records, Kunkel recorded her first record "Billy"
The Mamas & the Papas album "Romance Is on the Rise" (1974) by his then wife Geneviève Waïte, which he also produced; and he co-wrote "Kokomo" (1988), which was a number-one hit for the Beach Boys. Phillips was lost to heroin addiction through much of the 1970s, a period that culminated in his arrest and conviction in 1980 on a charge of conspiring to distribute narcotics, for which he spent a month in jail in 1981. In later years he performed with the New Mamas and the Papas (see below) and appeared in revival shows and television specials. He told his side of the Mamas