Going back to your 1st query, Trevor, "The major port of entry by ship [to South Africa] was Cape Town. The ports of Port Elizabeth, East London and Durban were also used... It is usually easier to trace shipping and passenger records in the port of departure."
http://southafricanresearcher.blogspot.com/2010/04/sources-of-information.htmlIf your grandfather, Frederick Charles Robas, was born on a ship just outside Durban in November 1901, you could try the Ship's Passenger Lists at the Public Records Office, Kew, London, UK, to look for details of Frederick's parents, Gabriel & Lottie. Ref: BT 27 Passenger Lists, Outwards, 1890-1960. However, "Post-1890 lists have not been microfilmed, many of them are in fragile condition and searching them can be very time consuming. There are no indexes of names, and most lists are not alphabetical. The information given varies, but can include age, occupation, last address and proposed destination. They are arranged monthly by
port of departure. To use them, a researcher must know at least the approximate date of departure and the port [of departure] to have any realistic hope of finding a passenger’s name."
So, even if your great-grandfather Gabriel Robas sailed originally from Australia with the final destination of South Africa, he might have changed ships anywhere in Europe or the Middle East first, so the departure port before Durban may be hard to find.
It would be very interesting to find out why Gabriel Robas was deported from Australia in 1901 - presumably with his wife Lottie, if she was pregnant during the sailing (aged about 25, if she was born circa 1876). The record of the deportation may be held by the Australian or British governments? In 1901 Australia was still a fledgling republic - first parliament May 1901. Australia was still part of the British Empire. So your great-grandparents Gabriel & Lottie may have acquired British nationality before sailing to Durban. In 1901 the Second Boer War was going on. Could Gabriel have been sent to South Africa in the military? (Cannon fodder if he was an immigrant from Cyprus.) Or for another reason.
"Hamburg is the only European port for which complete passenger lists exist for the years 1850-1934. The lists document more than 5.5 million persons and include sailings to other European ports and to overseas locations in North America, the Caribbean, South America and Africa. Each passenger’s hometown (place of origin, not necessarily birthplace) is included. The lists are alphabetically arranged and indexed for 1850-1854 and 1855-1934."
More on
http://southafricanresearcher.blogspot.com/2010/04/sources-of-information.html --
PS, this might be of interest too:
http://en.wikipedia.org/wiki/Immigration_Restriction_Act_1901