Susannah died in Lambeth in 1816, and was buried at St Mary's Lambeth on 11 October 1816, the register showed her age as 33 years, and her residence at the time was Union Street, Lambeth. 
↑ "England Marriages, 1538–1973 ," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:NV27-542 : 10 December 2014), James Hillier and Susanna Castelow, 09 Nov 1801; citing Saint Leonards,Shoreditch,London,England, reference ; FHL microfilm 296,256, 296,257, 396,254, 396,255, 396,258, 396,259.
↑ Ancestry London, England, Church of England Marriages and Banns, 1754-1932 
↑ "England Deaths and Burials, 1538-1991," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:N58Z-K3D : 24 December 2014), Susanna Hilliar, burial 11 Oct 1816; citing Lambeth, Surrey, England, index based upon data collected by the Genealogical Society of Utah, Salt Lake City; FHL microfilm 254,605.
It may be possible to confirm family relationships with Susannah by comparing test results with other carriers of her mitochondrial DNA.
However, there are no known mtDNA test-takers in her direct maternal line.
It is likely that these autosomal DNA test-takers will share DNA with Susannah: