Son of Hugo Louis Gramp and great grandson of Johann Gramp, who migrated from Kulmbach, Bavaria to South Australia in 1837 and who commenced Winemaking in the Barossa, planting vines at Jacob's Creek in 1847.

Colin was educated at Rowland Flat Public School, Nuriootpa Higher Primary School, St Peter's Collegiate School and Roseworthy Agricultural College. He married Josephine Homburg, daughter of Fritz Homburg on 14^th February 1946.

• Apprentice winemaker G Gramp & Sons Pty Ltd, 1940
• RAAF 461 Squadron Coastal Command, UK, 1942-1945
• Winemaker, G Gramp & Sons Pty Ltd, 1946
• Technical Director, G Gramp & Sons Pty Ltd, 1947 until retirement March 1974
• Foundation Member and a past President of the Barossa Valley Vintage Festival Association Inc and Member of the Executive Committee since 1947
• Council Member of the Royal Agricultural & Horticultural Society of SA since 1946
• Chairman of the Royal Agricultural & Horticultural Society of SA, 1975
• Chairman of the Adelaide Wine Show Committee since 1971
• Member of the Australian Wine Board since 1973
• Council and Executive Member of the Australian Wine Research Institute since 1973
• Proprietor and General Manager, Gramps Weinkeller Restaurant, 1972
• Director, Aquaculture International (Aust) Pty Ltd, 1974
• Councillor, Roseworthy Agricultural College, 1974

Recreations

• Boating, fishing, water skiing, photography and wild life preservation.

Clubs

• The Bacchus Club (Barossa Valley branch)
• The Rotary Club of Barossa Valley