Mythical hero seen from time to time inside America? (7)
I believe the answer is:
theseus
'mythical hero' is the definition.
(I've seen this before)
'time to time inside america?' is the wordplay.
'time to time' becomes 'se' (I can't justify this - if you can you should believe this answer much more).
'inside' indicates putting letters inside.
'america?' becomes 'theus' (I've seen this in another clue).
'se' going inside 'theus' is 'THESEUS'.
'seen from' is the link.
Can you help me to learn more?
(Other definitions for theseus that I've seen before include "ancient Greek" , "Occasion when public may visit (eg, school)" , "Athenian king" , "legendary slayer!" , "Duke in A Midsummer Night's Dream" .)