Keep the historical wording
Transcribe the location as it appears before adding a modern name. Distinguish a street, town, district and province. A label added decades later to a photograph is useful context, but it is not equivalent to a contemporary address.
Make a place timeline
Create a table with the wording, date, source and possible modern equivalent. Use maps and archive descriptions to check your interpretation. Mark uncertain matches visibly instead of silently choosing the closest spelling. Similar names can describe entirely different places.
Check the coverage
A ceremony or registration may have occurred outside the home district. If a search returns nothing, review the collection’s geography and date range before concluding that an event never happened. Save the search terms in your notes.
Further reading
For source material and collection context, visit National Archives of South Africa. Check the collection’s own scope and access instructions before relying on it.