↑ 1.01.11.2[1]Ferreira Families Janet Melville & Emmarentia S Ferreira; Des 2015. ISBN 0-86988-727-0. p159. Bygevoeg deur André Ferreira 29 Apr 2020
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DNA Connections
It may be possible to confirm family relationships with Helena Johanna by comparing test results with other carriers of her ancestors' mitochondrial DNA.
Mitochondrial DNA test-takers in the direct maternal line: