Noble person sheltering someone who’s poorly (5)
I believe the answer is:
leper
'someone who's poorly' is the definition.
'noble person sheltering' is the wordplay.
'sheltering' says the answer is hidden in the clue.
'LEPER' can be found hidden inside 'noble person'.
(Other definitions for leper that I've seen before include "Undesirable" , "Sufferer from dread disease, once made to wear bell" , "Social outcast" , "This person unwanted by society" , "sick person" .)