Not in same area - moved to Cardiff c1859 by the look of things

1861 - living at Llystalybont (Gabalfa district within Llandaff)
George, 27, Smith, B Devon Shaber (sic)
Elizabeth, 23, B Pontypool, MON
Catharine Sophis, Dau, 4, B GLA Neath
William RG, Son, 2 B GLA Cardiff
1871 - living North Rd, Gabalfa, Cardiff
George, 35, Blacksmith, B Devon
Elizabeth, 35, Blacksmith's wife, B Pontypool, MON
William, Son, 11, Errand Boy, B Cathays, Cardiff
Mary Elizabeth, Dau, 10, Blacksmith's Dau, B Maindy, Cardiff
Thomas, Son, 7, Blacksmith's son, B Maindy, Cardiff
John Henry, Son, 5, Blacksmith's son, B Maindy, Cardiff
Stephen, Son, 3, Blacksmith's son, B Maindy, Cardiff
Charles Edward, Son, 1, Blacksmith's son, B Maindy, Cardiff