The white grape variety (also Therona) is a new variety between Cape Riesling(Crouchen) x Chenin Blanc. The cross was made in South Africa in 1980 by Christiaan Johannes Orffer (1926-2008), the name was given to the winegrowing pioneer and professor of the University of Stellenbosch, C.J. Theron. The early maturing vine was specially bred for South African climatic conditions with artificial irrigation and the necessary rot resistance. The first wine from it was pressed in 1986. In 2010, 99 hectares of vineyard area were designated in South Africa with a downward trend (Kym Anderson).