Irish Grinstead. Photo Credit/Unknown. Irish Grinstead, from the '90s R&B group 702, reportedly died from kidney failure at 43. However, her family has not released an official statement about her cause of death. Her twin sister, Orish, also allegedly died from kidney failure in 2008. The twin's older sister, LeMisha Grinstead , who is also a member of 702, announced Irish's death to fans on Instagram: "It is with great sadness that I have to let you know that my beautiful si