The James Poole who married Mary Brookes in 1815 did not sign his name but marked instead. The James Poole who married Judith Weston in 1821 did sign. If these two records are for the same person it is possible that James learnt how to write his name. However, there is a burial in 1837 for Mary Poole aged 59. It is possible that this was the wife who married James in 1815. There is a marriage for a James Poole, Widower in 1839 to Betty Blackway. This James Poole did not sign his name but marked also.
Perhaps the James Poole who married in 1815 and the one who married in 1821 were different individuals.

Record_ID: 94521
Entry_Number: 16
Year: 1815
Month: Dec
Day: 7
Grooms_Surname: POOLE
Grooms_Forenames: James
Grooms_Age:
Groom_Condition: Batchelor
Grooms_Occupation:
Grooms_Residence: Of this Parish
Grooms_Fathers_Surname:
Grooms_Fathers_Forenames:
Grooms_Fathers_Occupation:
Brides_Surname: BROOKES
Brides_Forenames: Mary
Brides_Age:
Brides_Condition: Spinster
Brides_Occupation:
Brides_Residence: Of this Parish
Brides_Fathers_Surname:
Brides_Fathers_Forenames:
Brides_Fathers_Occupation:
Licence_or_Banns: Banns
Date_of_Banns:
Signature_or_Mark: Both mark
Witness_1: John Teagie
Witness_2: The mark of Elizabeth Clifford
Other_Witnesses:
Officiating_Minister: James Commeline Junr
Event: Marriage
Memoranda:
Notes:
Register_Reference: P265 IN1/10
Page_Number: 6
Parish_Chapel: Redmarley

Record_ID: 94550
Entry_Number: 45
Year: 1821
Month: Nov
Day: 17
Grooms_Surname: POOLE
Grooms_Forenames: James
Grooms_Age:
Groom_Condition:
Grooms_Occupation:
Grooms_Residence: Of this Parish
Grooms_Fathers_Surname:
Grooms_Fathers_Forenames:
Grooms_Fathers_Occupation:
Brides_Surname: WESTON
Brides_Forenames: Judith
Brides_Age:
Brides_Condition:
Brides_Occupation:
Brides_Residence: Of this Parish
Brides_Fathers_Surname:
Brides_Fathers_Forenames:
Brides_Fathers_Occupation:
Licence_or_Banns: Banns
Date_of_Banns:
Signature_or_Mark: He signs she marks
Witness_1: John Tomkins
Witness_2: The mark of Mary Mason
Other_Witnesses:
Officiating_Minister: Thos Hill Rector of Staunton
Event: Marriage
Memoranda:
Notes:
Register_Reference: P265 IN1/10
Page_Number: 15
Parish_Chapel: Redmarley

Record_ID: 226652
Entry_Number: 361
Year: 1837
Month: Mar
Day: 30
Surname: POOLE
Forenames: Mary
Residence: Redmarley
Age_at_death: 59
Officiating_Minister: W [illai]mJ Morrish
Event: Burial
Cause_of_death:
Memoranda:
Notes:
Register_Reference: P265 IN 1/15
Page_No: 46
Parish_Chapel: Redmarley

Record_ID: 73361
Entry_Number: 7
Year: 1839
Month: Apr
Day: 15
Grooms_Surname: POOLE
Grooms_Forenames: James
Grooms_Age: full age
Groom_Condition: Widower
Grooms_Occupation: Labourer
Grooms_Residence: Redmarley
Grooms_Fathers_Surname: Poole
Grooms_Fathers_Forenames: James
Grooms_Fathers_Occupation: Labourer
Brides_Surname: BLACKWAY
Brides_Forenames: Betty
Brides_Age: full age
Brides_Condition: Spinster
Brides_Occupation: Sempstress
Brides_Residence: Redmarley
Brides_Fathers_Surname: Blackway
Brides_Fathers_Forenames: John
Brides_Fathers_Occupation: Labourer
Licence_or_Banns:
Date_of_Banns:
Signature_or_Mark: Both mark
Witness_1: Mark of William Hill
Witness_2: Mark of Sarah Hill
Other_Witnesses:
Officiating_Minister: J Commeline Rector
Event: Marriage
Memoranda:
Notes:
Register_Reference: P265 IN 1/11
Page_Number: 4
Parish_Chapel: Redmarley