SAINT MARY-ST MARYLEBONE ROAD,ST MARYLEBONE,LONDON,ENGLAND
"England Births and Christenings, 1538-1975," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:JMNT-JBR : 11 February 2018, William Lloyd in entry for Frances Dorcas Lloyd, 01 Mar 1792); citing , index based upon data collected by the Genealogical Society of Utah, Salt Lake City; FHL microfilm 580,906, 580,907. --- A better source is needed.
It may be possible to confirm family relationships with Frances Dorcas by comparing test results with other carriers of her ancestors' 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 Frances Dorcas: