By a process of elimination, Charles who married Louisa appears to be George's son.
He is not married in 1841, but there are two other Charles Bulls in Hampshire, both with wives named Jane. One lives in Eling, the other in Boldre. By 1851, Charles son of George is now married with Clara & Thomas. The other two Charles, both with a wife named Jane, are in Eling and Boldre. The names of the children correspond sufficiently. The Charles living in Boldre married Jane Lancaster in 1821, children:
Charles 3 Mar 1822
Barbara 5 Oct 1823
James 30 Oct 1825
Ellen 3 Feb 1828
Emma 6 Jun 1830
Emily 5 May 1833
Eliza 5 Jul 1835
Alexander 7 May 1837
Jane 2 Aug 1840
Charles living in Eling married Jane Howard in 1828, children:
Charles Robert 29 Mar 1829
Emma 13 Mar 1830
Mary Ann 30 Sep 1832
Thomas 13 Nov 1836
I cannot find the baptism of Charles, son of George, nor any of his apparent siblings except John in 1809.
There are two possible marriages that I can see for Charles son of George:
Charles Bull Dec 1844 Southampton 7 321 – Louisa Powell on same page
or Dec 1838 Southampton 7 274 – Louisa Scammell on same page.
Nell