Aristocrat with no right to be terribly old (4)

I believe the answer is:
lord
'aristocrat' is the definition.
(lord is a kind of aristocrat)
'with no right to be terribly old' is the wordplay.
'with' indicates putting letters inside.
'no right' becomes 'r' (common abbreviation. I am not sure about the 'no' bit.).
'to be terribly' is an anagram indicator.
'old' is an anagram of 'lod'.
'r' put into 'lod' is 'LORD'.
Can you help me to learn more?
(Other definitions for lord that I've seen before include "aristocrat" , "Member of the aristocracy" , "Titled peer of the realm" , "Master, ruler or titled gent" , "Titled nobleman" .)
