Charlotte Muir's maternal grandmother was Mary Elizabeth Wilkinson, dau of Jonas Wilkinson and Charlotte St John. Here for completeness are her siblings, with a couple of interesting middle names which might provide clues to previous generations.
William Wilkinson, chr. 03 Mar 1802
Mary Elizabeth Wilkinson, b. 30 Mar 1805
James Wilkinson, chr. 02 Mar 1810
Frances Ann Wilkinson, b. 07 May 1811
Charlotte Maria Wilkinson, b. 07 Apr 1813
Jane Grant Wilkinson, b. 14 May 1815
Georgiana Wilkinson, b. 18 Apr 1817
Jonas Lyte Wilkinson, b. 13 7 1819
Charles St John Wilkinson, b. 12 Sep 1821
Sarah Martin Byam Wilkinson, chr. 23 Aug 1829
Wilhelmina Dalzel Wilkinson, chr. 23 Aug 1829
(All Barbados)
Rambler