Ah, I see - thanks, Ladyhawk.
I am still eagerly awaiting the marriage certificate I ordered from GRO, but in the meantime started looking at another branch of Cock-Collinses I'm unfamiliar with, a more recent one.
Two of the sons of Albert Edward C-C were Albert Claud and Leslie William, and it is particularly Albert Claud that I'm interested in because according to records someone has built, there were 2 daughters of that marriage (none for Leslie). (I have heaps on other brothers. I have heaps on Cecil, and someone else has provided the basics for Edward, who died aged 21.)
I have found some header records of comings and goings on ships between Cape Town and Southampton in 1939, 1950, 1955 and some undated. Albert's wife was Nicoline, and Leslie's was Johanna. In one of the records there is a daughter travelling with Nicoline - my notes say "Pretoria Castle, sailing Southampton to Cape Town on 8th November 1955. Nicoline is aged 47, born 3rd July 1908, housewife, and daughter is 15, born 2nd August 1940, no occupation. (No record found for Albert.)"
Albert C and Nicoline both died in Cape Town; not sure about Leslie but I think they probably all lived in South Africa.
I don't really need all of the details of their travels, but if anyone else can dig up a reference to a daughter with a name, that would be great.
I also spotted a "Mr P.W. Cock-Collins" on the Anc**try passenger list - no idea who he is; perhaps a mistranscription for L.W.?
Edit: Also, ignore Lucy Magdalene and another other C-Cs - it's only really those two brothers' families that I'm concerned with here.