Hi
Tracking back James Gurley Baskervill's son (who married in 1863 also called James Gurley Baskervill) though censuses gives you his father age 52 on the 1861 census a brass foundry finisher born Shoreditch.
This seems a likely baptism for him mistranscribed on the IGI
JAMES QUELEY BASKERVILLE
Birth: 23 JUN 1808
Christening: 31 JUL 1808 Saint Giles Cripplegate, London
Father: WM BASKERVILLE
Mother: AMY
and his parents marriage
WILLIAM BASKERVILLE
AMEY MILLETT
Marriage: 18 OCT 1796 Saint Leonards, Shoreditch, London
Regards
Valda