Family member found in Tyne and Wear region? That's a relief! (6)
I believe the answer is:
nephew
'family member' is the definition.
'found in tyne and wear region? that's a relief' is the wordplay.
'found in tyne and wear region?' becomes 'ne' (north-east of England).
'that's a relief' becomes 'phew'.
'ne'+'phew'='NEPHEW'
(Other definitions for nephew that I've seen before include "Sister's son" , "Family relative" , "Sibling's son" , "Male relative" , "Edward V to Richard III relation" .)