I take it there is no sign of another 'marriage' for her afterwards when she had a daughter.
Judge for yourself
1851
South End, Alford
Amelia COWHAM (mar) 23 Shoebinder, Alford
Joseph 2 Alford
Henry 1 Alford
next door to dad ...
Joseph STOCKTON (wid) 58 Cordwainer (Master),
Andrew 19 Cordwainer (Workman)
Harriett 18
Mary Ann TAYLOR Servant 12
All born Alford
1861
8 Harrisons Yard, Louth
Amelia COWHAM (wid) 28 Shoebinder, Alford
Henry Wm 11 Alford
Frances Amelia 3 Scarborough
It looks like she was the one buried in Louth.
Amelia's parents' burials (Alford)
Joseph STOCKTON 15 Nov 1876 (88)
Mary STOCKTON 17 April 1850 (56)