luke on Family Tree Circles

My great grand father came out to South Africa in the early 1900s he was one of 7 brothers I have been told that they were are very big men. My GGFs name was JAMES(JIMMY)WALKER he came out from Scotland and settled in DURBAN(South Africa) . I have been told that most of his brothers stayed in Scotland but one or two of them might have also come out to South Africa. But what I have been able to find out is that at least 4 of them stayed in Scotland.

please help !! as I would love to meet some of my long long lost family ,I live in Durban (South Africa)