 Riley Keough and her husband, Ben Smith-Petersen, shared that they have welcomed a daughter as they memorialized Keoughs mother, Lisa Marie Presley, on Sunday at Graceland. The memorial for Presley, who was Elvis Presleys only child, drew a crowd of mourners who included family, friends, and fans to the Memphis mansion that was the Presley ... Lisa Marie Presleys Daughter Riley Keough Has Welcomed A... 