Some family members in group of lodgers (6)
I believe the answer is:
masons
This clue might be a double definition.
'some family members' is the first definition.
'Masons' can be an answer for 'members' (Mason is an example). I am not certain of the 'some family' bit.
'group of lodgers' is the second definition.
(Stonemasons are part of lodges)
'in' is the link.
(Other definitions for masons that I've seen before include "Stoneworkers - may be free" , "Craftsmen working in stone" , "They work with stone and brick" , "Workers with stone - may be Free" .)