This may be the death reg for that Elizabeth:
Name: Elizabeth Sage
Registration Year: 1850
Registration Quarter: Apr-May-Jun
Registration district: Clutton
Volume: 11
Page: 90
Oh and...........
Name: Catharine Griffiths
Gender: Female
Baptism Date: 19 Mar 1826
Baptism Place: St. Andrew's, Clifton, Gloucester, England
Father: Isaiah Griffiths
Mother: Joannah