1851 Census of Milton next Gravesend, KentHO107/1609/361 page 45
3 Ifield Court
James Boon, head, mar, 24, labourer, born Gravesend Kent
Mary Ann Boon, wife, mar, 21, born Rochester Kent
Sarah Ann Boon, daur, 4, born Gravesend Kent
James Boon, son, age 3, born Gravesend Kent
Charles F? Boon, son, age 6m, born Gravesend Kent
Note the neighbours on the previous page!

2 Ifield Court
William Boon, head, mar, 40, labourer, born Gravesend Kent
Mary Boon, wife, mar, 31?, born Sussex
Mary Ann Boon, daur, 10, born Chalk Kent
John Boon, son, 7, born Gravesend Kent
Eliza Boon, daur, 2m, born Gravesend Kent