David - Sorry I dont have any information on Samuel b 1804 - the list of children amounts to 15 so a very large family.
Robert 1798-1824
James 1799-1845 died New Orleans USA
Nessy 1800-1831
Calcott 1802
Samuel August 1804
Margaret 1807-1905
John 1808
Peter Heywood June 1810-9/9/1876 New Zealand
Mona 1811
Eleanor Jane 1812
May 1813
Thomas Richard 1814
Eliza b England 1814-1883
Heywood 1816
Rebecca b 1820 London and died 1905

If you are interested in Heywood descendancy in general I have a lot.