Apparently Rosalind Lloyd has made a detailed survey of St Chad's graveyard:
https://www.cofekirkby.co.uk/st-chads-information/churchyardpage/However, the link doesn't work.
I found this from her:
https://www.ancestry.co.uk/boards/localities.britisles.england.lan.general/14483/mb.ashxHowever, that link is dead too.
I managed to get a cached version which has the following:
Owen, Alice, A360, A603
Owen, Betty, A753
Owen, Catharine, A338
Owen, Charles, A365
Owen, Clara, A29
Owen, Clarissa, A61, A890
Owen, Clarissa Barton, C34t
Owen, Elizabeth, A296
Owen, Ellen, A29, A62, A268, A293, A801
Owen, Ellen (née Shacklady), A822
Owen, Frances, A494
Owen, George, A194, A753
Owen, Henry, A296, A613
Owen, Isaac, A61, A493?, A890
Owen, James, A268, A526, A801
Owen, Jane A48, A330, A890
Owen, John, A29, A338, A398, A474, A494, A753
Owen, Joseph, A293
Owen, Lydia, A194, A613
Owen, Margaret, A338, A526, A753
Owen, Mary, A61, A398
Owen, Mary Alice, C34t
Owen, Nancy, A29
Owen, Nanny (Anne), A613
Owen, Peter G, Memorial
Owen, Richard, A891, C34t
Owen, Robert, A29, A338, A452, C34t
Owen, Samuel, A801
Owen, Thomas, A48, A62, A360, A603, A890
Owen, Thomas Beesley, A603
Owen, William, A194, A330, A425, A454
Owen, Winifred, A971
https://web.archive.org/web/20040402164716/http://mysite.freeserve.com/stchadskirkbyAs you can see some families are buried in the same grave and that might help you figure out their relation to each other (or eliminate them from your enquiries) and other families, like:
Pickavance, Ellen, A338
...
Prescot(t), Jane, A61, A158, A849
At least knowing the plot number might help you direct your Find a Grave request to the right place. Like
A398?