Relative having soiled article removed (5)
I believe the answer is:
uncle
'relative' is the definition.
(uncle is a kind of relative)
'soiled article removed' is the wordplay.
'soiled' becomes 'unclean' ('unclean' can be a synonym of 'soiled').
'article' becomes 'an' (indefinite article).
'removed' suggests deleting specific letters.
'unclean' with 'an' taken away is 'UNCLE'.
'having' is the link.
(Other definitions for uncle that I've seen before include "older relative" , "He's related" , "Brother of one's parent" , "Sam, perhaps" , "takes the pledge" .)