The Joel family of England was headed by three brothers, Isaac, Woolf and Solomon, who made a fortune in diamond and gold mining in South Africa. Their father was Joel Joel (1836-1893) and their mother Catherine Isaacs (1840-1917) "Kate", a sister of Barnett Isaacs, later to be known as Barney Barnato.
As well as being prominent Randlords, several of the Joel family...