The posthumous memoir of Lisa Marie Presley written in collaboration with her daughter Riley Keough will be published later this year.

The as yet untitled book about Lisa Marie’s life as the daughter of Elvis will be released by Pan Macmillan on 15 October. Lisa Marie, who died on 12 January last year, had asked Keough to help her finish her memoir, parts of which she had recorded on tape.

According to the publisher, the memoir is composed “mostly” of Lisa Marie’s words, with Keough “filling in the blanks” from her own memory. The book will discuss Lisa Marie’s relationship with Elvis and her mother Priscilla, as well as her marriages to Michael Jackson and Nicolas Cage and the loss of her son, Keough’s brother Benjamin, who killed himself in 2020.

“Few people had the opportunity to know who my mom really was, other than being Elvis’s daughter,” said Keough. “I was lucky to have had that opportunity and working on preparing her autobiography for publication has been a privilege, albeit a bittersweet one.”

Lisa Marie died unexpectedly aged 54 because of a bowel obstruction, which was a complication of bariatric surgery she had several years ago.

Sara Cywinski, publishing director at Pan Macmillan, said she is “glad that there is an opportunity for the world to see Lisa Marie as Riley, and those closest to her, saw her. And, too, for the generations to come to understand the complexity of being a Presley.”

An audiobook of the memoir, read by Keough and including snippets of Lisa Marie’s voice, will be released simultaneously with the print edition.

Lisa Marie was the only child of Elvis and Priscilla, and she was raised in Graceland. She became a singer and released three albums, To Whom It May Concern, Now What, and Storm & Grace. Thirty-four-year-old Keough, the sole trustee of Graceland, is an actor; she starred in Daisy Jones & the Six and Zola among other productions.

“I’m so excited to share my mom now, at her most vulnerable and most honest, and in doing so, I do hope that readers come to love my mom as much as I did,” added Keough.

• Lisa Marie Presley Untitled Memoir by Lisa Marie Presley and Riley Keough (Pan Macmillan, £25). To support The Guardian and Observer, order your copy at guardianbookshop.com. Delivery charges may apply.