I know I promised that there would be no further Grania O'Malley posts. Earlier today, I received an email from one of Grania's nephews, a member of the O'Malley-Keyes family. He says the family is embarrassed by her lies and behavior. He confirmed that she is his aunt, and that she recently attended his wedding. One of her sons was in the bridal party.
The nephew also confirmed that Grania is Hamilton and Sadie's daughter, and is most certainly not the issue of Lady Iris Mountbatten.