Gwyneth Paltrow is grieving the loss of her grandmother.

The 'Iron Man 3' star's paternal grandmother, Dorothy Paltrow, passed away in Palm Beach, Florida on March 31, just six days after the actress announced her split from Chris Martin after 10 years of marriage.

A death notice in the Palm Beach Post newspaper on Friday (04.04.14) stated that a private memorial service would be held for Dorothy, who is survived by her children Robert and Fran and five grandchildren, at a later date.

Gwyneth's father Bruce passed away from oral cancer in October 2002.

The family have asked for donations to be made in Dorothy's name to her late grandson Keith Adam Paltrow's Memorial Scholarship Fund at Cornell University in New York.

Dorothy's death came at a difficult time for Gwyneth, 41, who quietly flew to the Bahamas with Coldplay frontman Chris and their children, Apple, nine, and Moses, seven, before announcing their separation on March 25.

A source previously revealed that the blonde beauty's mother, Blythe Danner, was comforting her over the phone, as Gwyneth and Chris were lying low to avoid the spotlight.

Despite their split, the former couple - who have homes in Los Angeles and London - have vowed to stay friends for the sake of their children.

Another source said: ''They're trying to make it as easy as possible for the kids. The whole plan is to do this as amicably as possible.''