Education
Born at Carrs Plains to grazier Holford Wettenhall (a former Legislative Council member) and Mary Burgess Dennis, he attended local state schools before attending Toorak College and Geelong College, becoming an orchardist, wheat farmer and grazier.
Career
He farmed at Carrs Plains from 1908 to 1923 and then moved to Melbourne. In 1920 he was elected to the Victorian Legislative Assembly as the Country Party member for Lowan. In 1923 he was appointed a minister without portfolio, serving until 1924.
Membership
Wettenhall held various community positions, including president of the Victorian Fruit Growers Central Association (1902), president of the Australian Fruit Growers federal conference (1902), member of the Federal Council of Woolgrowers (1926-1935), chairman of the council of Agricultural Education (1938-1939) and member of Melbourne University Council (1924-1938).