Oldest first-time grandfather
- Who
- John (Jack) Anderson
- What
- 90:271 year(s):day(s)
- Where
- Australia (Geelong)
- When
- 20 January 2016
The oldest first-time grandfather is John (Jack) Anderson (AUSTRALIA, b. 24 April 1925), at the age of 90 years 271 days, as verified in Geelong, Victoria, Australia, on 20 January 2016.
Research shows the average age for becoming a first-time grandparent is 50. Jack became a first-time grandfather at the age of 90 when his daughter Lara gave birth to his grandson Clancy.