England, Births and Christenings, 1538-1975,"
name: James Shirley
gender: Male
baptism/christening date: 23 Dec 1767
baptism/christening place: Fakenham, Norfolk, England
father's name: James Shirley
mother's name: Mary
indexing project (batch) number: I05244-2
system origin: England-EASy
source film number: 1595483
reference number: item 15

Parents marriage
England, Marriages, 1538?1973
groom's name: James Shirley
bride's name: Mary Clarke
marriage date: 08 Feb 1767
marriage place: Fakenham, Norfolk, England
indexing project (batch) number: I03227-6
system origin: England-EASy
source film number: 1595483
reference number: 9

Both James senior and Mary had been married before and were widowed. James was from the parish of Hempton.

I found this and may be of interest:

Will of Thomas Shirley, Felmonger of St Martin at Oak in the city of Norwich, Norfolk. Proved in the Court of Norfolk. January 19 1797 IR 26/388 [Death Duty] Executors: James Shirley of Chippenham Park, Cambridgeshire, gardiner (brother) and John Dyball of Upton in Norfolk, farmer. Residue of estate converted to money and reserved to daughter Judith Shirley (a minor). But in case she should not reeach age 21, then L100 part to my father James Shirley and the residue divided equally between brother and sister (Mary Shirley) and wife if they all be living.