Hi,
On the 1871 for England
The only Margaret Maloney born Whitchurch c 1865, has father James and mother Mary.
The only Margaret Maloney born Cardiff c1865, has father Patrick and mother Catherine.
On the 1861 for Wales
RG9 / 4035 / 66 / 24
living in Cardiff, at 31 Lyndall St.
Catherine Maloney, head, w, 55, formerly a public house keeper, Ireland.
Patrick, son, Mar, 33, contractor, Essex, Barking.
Elizabeth, wife, mar, 32, Ireland.
Catherine, daur, 7, scholar, Glam, Cardiff
Michael, son, 4, Glam, Cardiff
Mary Ann, daur, 2, Glam, Cardiff
Ellen, Daur, 2, Glam, Cardiff
hope this helps
Sue