Hi,
I know nothing about marrying late in my city in late 40s.
Is the above sentence correct?
Does late 40s refer to the age of the people you are talking about, or to the 1940s? I think you mean the former.
I know nothing about marrying late, in one's late forties, in my city.
I know nothing about marrying late in my city in the late 1940s.
Best wishes, Clive