Hm. I wonder now.
This is the 1861 entry for the Sheviock family:
RG9/1524 5 4
Sheviock, Cornwall
Jane Landry, head, 41, wid, Laundress, b. Pelept?
Margratt, dau, 19, Laundress, b. Sheviock
Emiline, dau, 14, b. do.
Ann Jane, dau, 11, scholar, b. do.
John C, son, 9, scholar, b. do.
Richard E, son, 7, scholar, b. do.
Mary C, dau, 6, scholar, b. do.
Either Caroline is not at home or she is in fact Mary Caroline...
Going back to 1851, I see the father is called Edward. I think the 1875 marriage cert would certainly be very interesting to see...