Have you found the 2 children of Frederick & Amy?
Burial in Brian's list __ John Athol Rackham 1892--
8 weeks & Lena Dennis Rackham [ girl --- so Dennis
a family surname ?? ] 8 months. 16 /03 /1887
John does not seem to have been baptised but
Lena 's baptism can be found [familysearch ]