Cousin Jan.
Yes you have the right number for Edwards 1841 Census entry (HO 107/564-13, ED26, Folio 38, Page 20), I think it is ELDON Street (not Eldon Place)
James, Jane & Family can be found at (on same page Janes Parents & Siblings):
HO107/564-2, ED 39, Folio 11, Page 14, Balmer Place, Carlton Street
Owen OWENS, 45Yrs old, Rigger, Bn Not in County
Eleanor OWENS, 45Yrs old, , Bn Not in County
Robert OWENS, 14Yrs old, Apprentice Boilermaker, Bn In County
Elizabeth OWENS, 12Yrs old, Bn In County
James DUFFY, 25Yrs old, Boilermaker, Bn In County
Jane DUFFY, 20Yrs old, Bn Not in County
Elizabeth DUFFY, 2Yrs old, Bn In County
Robert DUFFY, 1Yr old, Bn In County
Jane OWENS (James DUFFYs wife) was born in Llanbeblig, Caernarvon, North Wales @1817, she was Christened on 27th December 1818 at Llanbeblig Church
Her Parents Owen OWENS & Eleanor MORGAN were married on 5th July 1815 at Llanbeblig Church
I have a few threads going which hold further info on the Owens & Morgan Families:
http://www.rootschat.com/forum/index.php/topic,221167.msg1179960/topicseen.html#msg1179960http://www.rootschat.com/forum/index.php/topic,207482.msg1071198/topicseen.html#msg1071198