Elizabeth Pearce was born in Marden, Kent in 1805, and baptised there on 1 April 1805, the daughter of Thomas and Sarah Pearce 
At some stage before 1825, she may have married Walter William Evans, and they had three children together, initially living in Kennington, Surrey. Thomas was born in 1825, Sarah in 1828 and Frances in about 1832. The first two children were baptised in Marden, Kent in 1828.
Elizabeth then married George David King. This may have been the marriage in Maidstone, Kent on 17 August 1834 
George and Elizabeth were living in Marden, Kent in 1837 when their daughter Mary was born, but by 1841 they had moved to Goudhurst, and were living at Winch Hill Farm:
↑ "England and Wales Census, 1851," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:SGL4-QG1 : 24 July 2016), George David King, Saint Margaret Rochester, Kent, England; citing Saint Margaret Rochester, Kent, England, p. 1, from "1851 England, Scotland and Wales census," database and images, findmypast (http://www.findmypast.com : n.d.); citing PRO HO107 1610 f205 p1, The National Archives of the UK, Kew, Surrey.
It may be possible to confirm family relationships with Elizabeth 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 Elizabeth: