Upon the death of the third Baron, and the fourth Baron's accession to the title, Leonora was styled Lady Leonora Mary Eaton, Baroness Cheylesmore of Cheylesmore.
The couple separated and after a highly publicised Court trial, divorced on 27 February 1927, allegedly on the grounds that the Lady Nora could not produce an heir for the Barony.
According to Australian society pages from the day, the Dowager Baroness, Elizabeth also did not approve the match and created numerous issues for the couple.
The Lady Nora continued to live in London following the separation at the Savoy Hotel.
Given that there was no heir to the title upon the death of the fourth Baron in 1985 the Barony became extinct.