Unkindly teased young Edward about Dad’s sister (7)
I believe the answer is:
taunted
'unkindly teased' is the definition.
'taunted' can be an answer for 'teased' ('taunt' can be a synonym of 'tease'). I'm not sure about the 'unkindly' bit.
'young edward about dad's sister' is the wordplay.
'young edward' becomes 'ted' (I am not sure about the 'young' bit.).
'about' indicates putting letters inside.
'dad's sister' becomes 'aunt' (I've seen this in another clue).
'ted' enclosing 'aunt' is 'TAUNTED'.
Can you help me to learn more?
(Other definitions for taunted that I've seen before include "Deliberately provoked by poking fun at" , "Mocked, jeered" , "Twitted" , "Derided, mocked" , "Jeered at in a cruel and hurtful way" .)