Philosopher from Australia found in Spain perhaps (7)
I believe the answer is:
spinoza
'philosopher' is the definition.
(I've seen this before)
'australia found in spain perhaps' is the wordplay.
'australia' becomes 'oz'.
'found in' indicates putting letters inside.
'perhaps' indicates an anagram.
'spain' anagrammed gives 'spina'.
'oz' put within 'spina' is 'SPINOZA'.
'from' is the link.
(Other definitions for spinoza that I've seen before include "Dutch 17th-century philosopher" , "philosophical sort" , "2 [PHILOSOPHER]" , "C17 Dutch philosopher" .)