Answer:
I am the red tongue of the earth, that buries cities.
A gentleman whose offspring have successfully produced offspring of their own.
I have a pet, his body is full of coins
What occurs four times in every week, twice in every month, only once in a year but never in a day?
What time of day, when written in capital letters, is the same forwards, backwards, and upside down?
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.