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- [S57] de Villiers, C.C., revised by Pama, C., Genealogies of Old South African Families, (Published A.A Balkema, Cape Town, 1981 ISBN 0-86961-136-4), Entry for van Zyl (Reliability: 3).
- [S59] Marriage Register, Tulbagh NGK, (Tulbagh Nederduits Gereformeerd Kerk (NGK), Tulbagh, Western Cape. marriages register, 1744-1839. Repository: NGK archives, Stellenbosch University, G4 9/1. Transcribed by Trysie Joubert, Marelize Keyter, Marie Greyvenstein and Annatje Erasmus as part of the eGGSA Project, from VC 664, Cape Archives Repository), page 32 (Reliability: 3).
- [S57] de Villiers, C.C., revised by Pama, C., Genealogies of Old South African Families, (Published A.A Balkema, Cape Town, 1981 ISBN 0-86961-136-4), Entry for Rousseau (Reliability: 3).
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