Hello Mike, Sorry to hear about your sad news.
Meanwhile I've found the baptism at Riseley parish church of the children of Johannes & Mary Peacock, blacksmith.
Vashni 1 July 1827, born 16 Jun 1822
Bela 11 Nov 1827
Evelyn 19 Jul 1829
but didn't see baptism of son Johannes 1831
Also at Riseley were baptisms of children of Charles & Flora Warren, glasier
Flora being Flora Peacock daughter of Thomas & Mary/Ann, sister of Johannes
Bani ? 6 July 1824
Elam 25 Dec 1825
Thomas Peacock 5 Aug 1827
On this last one they were living at Wollaston, Northants
Plus baptisms of children of Charles & Tryphena Smith, butcher of Chelveston, Northants
I think she is the un-named female baptised 8/2/1801, daughter of Thomas & Mary/Ann Peacock
Tryphosa daughter on 5 Aug 1827 age 2 & half years
Louisa also on 5 Aug 1827
Next more baptisms at Bedford Moravian church
13 Jan 1823, born 16/12/1822 Tryphena daughter of Charles & Tryphena Smith; witnesses to this are Thomas & Ann Peacock.
12 Sept 1829 Louisa daughter of Charles & Flora Warren
20 Nov 1831, born 15/10/1831 Charles Henry son of Charles Thomas & Flora Warren
He was buried at Moravian church on 25 Oct 1833 aged 2 years
2 Nov 1834, born 2/10/1834 Rose Ellen daughter of Charles & Flora Warren
27 Dec 1835 born 25/11/1835 Samuel son of (Charles) Thomas & Flora Warren
Also found baptism on 7 Oct 1841 of Mary Emma Warren in Wollaston & she was buried there on 14 Oct 1841 aged 3 months, I assume she's daughter of Charles & Flora.
I think the above Rose Ellen Warren is the Hellen Warren b 1835 in the household of Johannes & Mary Peacock on the 1841 census living at Riseley, while her parents Charles & Flora are living in Wollaston with Louisa & Samuel. Therefore Johannes Peacock is H/Ellen Warren's uncle & if Flora is child of Thomas & Mary/Ann then so is Johannes. I cannot find Rose Ellen or her parents in 1851 but she marries Ebenezer Chew at Biggleswade in Dec quarter 1856.
John