First given name of “Isaac” from birth registration of grandson, Tom Newsham”, found in January 2024:
Name: Tom Newsham
Mother: Susanna Jecks
Mother's Father: Isaac Jecks of Wisbech

Date and place of marriage from the Nottinghamshire, Church of England Marriages records, found in January 2024:
Groom: Isaac Jecks
Bride: Mary Bloomar
Marriage Date: 21 November 1782
Marriage Place: St. Mary Magdalene, Newark, Nottinghamshire, England
Married in Church: By Licence

Date and place of birth, date and place of baptism at All Saints Church, Norwich, England, son of Robert Jecks and Ann Coleman, died at his house in Chapel Field, Norwich aged 85, estimated year of death of 1841, found in March 2024:
https://winsomegriffin.com/Newsham/Isaac_Jecks.html

Issac and Mary had the following children, added in March 2024:
https://winsomegriffin.com/Newsham/Isaac_Jecks.html
1. Mary Jecks 1785-1829
---Married 1806 to Charles Hursthouse born 1781
2. Susannah Jecks 1787-1787
3. Thomas Jecks 1788-1822
---Married Mary Gaches 1789-1852
4. Susannah Jecks 1789-1790
5. Susannah Jecks 1790-1853 [LINK BELOW]
---Married 1814 to Joseph Newsham 1796-1842
6. William Jecks 1791-1864. Never married.
7. Sarah Jecks 1793-1822
---Married 1815 to John Coote 1786-1873
8. Charles Jecks 1795-1884
---Married [1] Sarah Ann Wright 1836-1917;
---Married [2] 1821 to Maria Robertson 1801-1873
9. Ann Jecks ca1797-1823
---Married 1818 to James Hill d.1870
10. Isaac Jecks d.1874
---Married 1801to Sarah Ogle 1787-1868
11. Eliza Jecks 1802-
---Married James Hill d.1870, the widow of her sister Ann