From your other messages, this is the family, right?:
Sarah Hughes (b. 1851) (married John Henry Harris)
mother Mary J, b. abt 1821 France.
So she wasn't nee Hughes.
1871 census, Bilston:
RG10/2950 72/10
Thomas Hughes, 47, coal miner, b. North Wales
Mary, 45, wife, b. France
Sarah, 20, dau, b. Bilston
John, 18, son, ironworker b. Bilston
Emanuel, 16, son, ironworker b. Bilston
Thomas, 14, son, ironworker b. Greatbridge
William, 9, son, ironworker, b. Darlston
1861, Bilston Road, Darleston
RG9/2009 46/41
Thomas Hughes, 36, coal miner, b. St Martin Shropshire
Mary, wife, 34, b. France
Sarah, dau, 11, b. Bilston
Emanuel, son, 6, b. Bilston
Thomas, son, 4, b. Tipton