[I have traced my ancestor AUGUSTUS SPAIN from his birth at CANTERBURY in 1793 to Camberwell then Walworth (1819) to SOUTHOWRAM near HALIFAX Yorks. (1841) with wife MARY nee KING and son WILLIAM b1819 at Walworth then in 1848 his wife MARY died and in 1850 he married a SOUTHOWRAM lady MARY COOPER b 1803. The 1851 census shows him living with his son WILLIAM at SOUTHOWRAM (his 2nd wife MARY is listed at her parents house nearby ) but they can't be traced in the 1861 census ! why ?