His Lady was of the Lake (5)
I believe the answer is:
scott
'his lady was' is the definition.
The definition suggests a singular noun which matches the answer.
'the lake' is the wordplay.
I cannot really understand how this works, but
'the' could be 't' (the is pronounced as a 't' sound in some dialects) and 't' is found in the answer.
The remaining letters 'scot' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
'of' is the link.
Can you help me to learn more?
(Other definitions for scott that I've seen before include "Sir Peter -----, ornithologist son of a great explorer" , "Polar explorer" , "Sir Walter --, writer" , "one wanting to explore?" , "old novelist" .)