William Jaggard was christened on the 8th March 1778 at Walsham le Willows, Suffolk, England. 

His parents were George and Susanna Jaggard. 

 He married Mary Palmey and they had the following children:

• William Jaggard (1801-)

• John Jaggard (1806-)

After the death of Mary Palmey in 1806, William married Mary Ann Lynn and added a further eight children to the family:

• Henry Jaggard (1809-1888)

• Robert Jaggard (1811-)

• Betsey Jaggard (1814-)

• Jane Ann Jaggard (1817-)

• Sarah Jaggard (1816-)

• James Jaggard (1819-)

• George Jaggard (1823-) 

• Mary Ann Jaggard (1826-)