Sources

Marriage register - Frederik Petrus Senekal and Johanna Elizabeth Viljoen

"South Africa, Free State Dutch Reformed Church Records, 1848-1956," database with images, FamilySearch (https://familysearch.org/ark:/61903/3:1:3Q9M-C953-S9KG-J?cc=1910846... : 4 November 2016), Free State > Kroonstad > Marriages 1863-1874 > image 129 of 422; Dutch Reformed Church Synod Centre, Bloemfontein.

Death notice of Johanna Elizabeth Viljoen

"South Africa, Orange Free State, Probate Records from the Master of the Supreme Court, 1832-1989," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:7PGW-BCZM : 24 August 2019), Johanna Elizabeth Viljoen, 1880; citing Probate, Heilbron, Cradock, Cape Province, South Africa, Master's Office of the Orange Free State Archives, Bloemfontein; FHL microfilm 004071543 > image 1192 of 2315.

Marriage register - Frederik Petrus Senekal and Alberta Hendrika Jacoba Janse van Rensburg

"South Africa, Free State Dutch Reformed Church Records, 1848-1956," database with images, FamilySearch(https://familysearch.org/ark:/61903/3:1:3Q9M-C953-39BJ-X?cc=1910846... : 4 November 2016), Free State > Heilbron > Marriages 1873-1887 > image 173 of 429; Dutch Reformed Church Synod Centre, Bloemfontein.

Death notice of Alberta Hendrika Jacoba Janse van Rensburg

"South Africa, Orange Free State, Estate Files, 1951-2006," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:Q2Y8-4GTL : 15 July 2017), Albertha Hendrika Jacoba Janse Van Rensburg Du Toit, 18 Sep 1952, Death; citing Heilbron, Orange Free State, South Africa, Master of the Free State High Court, Bloemfontein; FHL microfilm 005594839 > image 734 of 841.

Publications

"Heese, J.A. & Lombard, R.T.J. “South African Genealogies 1” Human Sciences Research Council, 1992, ISBN 0-620-23962- v.11 p.231"