I have found a single sheet of paper with this statement of her family by Jane Barrington; it is a copy of an original document:
Children of Sir Fitzwilliam Barrington, Baronet
Louisa Edith, married Sir Richard Simeon, Bt & had 3 sons & 2 daughters,
Fitzwilliam died, his age 7 -
Jane Elizabeth,
Julia married Henry Powys Esq & died leaving one son, her age 24 -
Anne Emma, died her age 19 -
Ellen Flacke married J G Campbell Esq she died leaving 1 son & 2 daughters,
Mary married J P Vandeleur Esq & died her age 21 -
This is a melancholy Register, my dear sir to fill up yr Pedigree with,
Yrs Truly (Copied) Jane Eliz Barrington
The cover of the paper is dated 1837 and the paper is watermarked "J Coles 1830".