Hi Kathryn [I am back again!!]
Jane Marley born 1817 died about 1850 Hopton by Thetford. She bore William two children:-
Frederick 1845 - 1845 [died before he was one year old]
Frederick [again] born 1846 and died 15th March 1924 at Coney Weston
As you say Frederick married Elizabeth Wiseman who was born about 1846 Hopton by Thetford and died about 1913 and married about 1866.
Robert born 1866 - died 1948 aged 82 years
Alfred born 1868 - died ?
Charles born 1870 - died ?
William born 1871 died 1874 [deceased in 1881 census]
Frederick born 1873 died 1874 ditto
Fortune born 1874 died ?
Jane born 1877 died 1939
Frederick [another one after the death of Frederick above] born 1879 - died ?
Hannah Maria born 1881 - died 1881
William born 1883 - died ?
I have no record of Alfred other than above but Jane Garnham [his sister] was born 11th May 1877 Hopton by Thetford and died 1939 Mackay, Queensland, Australia. I believe her spouse was Albert Edward Austin and they were married about 1899.
I must away to bed now Kathryn so I will catch you later.