It could be a remarriage perhaps? I cannot find any offspring for your couple and surely both our Taylor's being from Ceres is not a coincidence.
I am trying to find as much information as I can on the ancestors of John Taylor and Agnes Gold. Here is the data on them and their descendants:
James Taylor, m. Agnes Gold - 23 Nov 1844 Ceres, Fife, Scotland
BETSY TAYLOR Birth: 10 APR 1846 Christening: 17 MAY 1846 Ceres, Fife, Scotland
AGNES TAYLOR Birth: 22 MAR 1848 Christening: 16 APR 1848 Ceres, Fife, Scotland
ISABELLA TAYLOR Birth: 22 MAR 1848 Christening: 16 APR 1848 Ceres, Fife, Scotland
EUPHEMIA TAYLOR Birth: 01 APR 1850 Christening: 16 MAY 1850 Ceres, Fife, Scotland
MARY ANNE TAYLOR Birth: 02 JUL 1853 Christening: 30 JUL 1853 Ceres, Fife, Scotland
JAMES TAYLOR Birth: 20 MAY 1855 Ceres, Fife, Scotland
JOSEPH TAYLOR Birth: 22 MAR 1857 Cameron, Fife, Scotland
GEORGE TAYLOR Birth: 13 JUL 1859 Leuchars, Fife, Scotland
JOHN GOLD TAYLOR Birth: 13 OCT 1861 St. Andrews And St. Leonards, Fife, Scotland
ROBERT TAYLOR Birth: 25 NOV 1863 Dairsie, Fife, Scotland
DAVID BERWICK TAYLOR Birth: 19 MAR 1866 Dunbog, Fife, Scotland