Kids, I will tell you a story which has not been told by your elders.
Could you please tell me how to reduce this relative clause? I am giving two examples to you to check.
-Kids, I will tell you a story untold by your elders.
-Kids, I will tell you a story not told by your elders.
Are they OK?
***NOT A TEACHER***
"Elders" isn’t correct unless you mean senior members of certain churches or tribes.
More: go here please, post # 5.