Hi
Right - progress at last!
First of all I have checked the marriage of Eliza Downing. Where I have written Howard would you please change this to Henry. I have also checked the date and this is correct. Also, John Downing's occupation could be also interpreted as "tanner" rather than "farmer".
Next the death of Patrick Larkin(s). This happened at 3:30pm on 14th May 1862 at Hue Street, St Helier. Patrick was 39 years old and was a Marchand de Muebles (furniture salesman). He died from "inflamination de pouerous" and the death was reported by Bridget Larkin of 5, Gas Lane, St Helier. She couldn't write her name and signed with an "X". Question - is this the right Patrick?
I have found all of the children mentioned in the 1871 census (plus Alice) and they are all under the surname of Bennett and born in St Helier.
Henrietta - 9th Dec 1863 to 6th Jan 1865, volume 20, page 8
Henry Edward - 7th Jan 1865 to 2nd Feb 1866, volume 21, page 93
Harriet Mary - 9th Mar 1867 to 8th May 1868, volume 23, page 30
Helena Miriam Victoria - 9th May 1868 to 22nd Jul 1869, volume 24, page 59
Alice Maud - 26th Nov 1871 to 112th Mar 1873, volume 27, page 68
I didn't have time to look at all of the certificates but I did look at Henrietta's. She was born at 2:30am, 25th Dec 1863 at 14, Garden Lane, St Helier. Her father was Henry Bennett a boulanger and her mother was Eliza Larkin. The birth was reported by Susanna Stye.
So the reason why the 3 children weren't mentioned is probably because they were born out of wedlock.
Hope that helps.
Stewart