a grand old age
A very old age. My grandfather passed away this weekend. He lead a remarkable life and lived to a grand old age.
the grand old age of
The very old age of. My grandfather passed away this weekend. He lead a remarkable life and lived to the grand old age of 98.
a/the ˌgrand old ˈage
a great age: She finally learned to drive at the grand old age of 65.