Legendary king has home with gold foundation (6)
I believe the answer is:
nestor
'legendary king' is the definition.
(king in Greek mythology)
'home with gold foundation' is the wordplay.
I cannot quite understand how this works, but
'home' could be 'nest' (a bird's home) and 'nest' is found in the answer.
'gold' could be 'or' ('or' is the heraldic name for gold) and 'or' is located in the answer.
This accounts for all the letters.
This explanation may well be incorrect...
'has' acts as a link.
(Other definitions for nestor that I've seen before include "Respected counsellor" , "Oldest, wisest Greek (Trojan Wars)" , "Wise counsellor of ancient Greece" , "Greek hero and wise counsellor" , "wise old king of Pylos" .)