Hi -
We have found the following at Jersey Archives:
St Helier parish church Baptisms 1838-1842:Sarah Jane Rockett 28 June 1840
daughter of Joseph Rockett, shoemaker and Susan his wife
Godparents: Henry and Ann Collins (Dean's reference 292, registry no. 181)
Mary Ann Rockett, born 28 July 1842, baptised 7 Aug 1842
daughter of Joseph Rockett, shoemaker and Susan his wife
Godparents: the said father and Mary Golliker
also in
1834 - 1838 register:
Joseph Rockett - son of Joseph and Susan (born at Devonport),
5 October 1834 - reference 36
Godparents: Wm Nute and Ann Collings
Eliza Rockett - daughter of Joseph and Susan
3 July 1836 - refernce 172
Godparents: Geo Cook and Jane Cook
Louisa Rockett - daughter of Joseph and Susan
4 March 1838 - reference 303
Godparents: Chs Collings and Ann Collings
No Rocketts were baptised between 1829 and 1834 in St Helier parish church.
St Helier Parish Church marriage17 June 1860
David Jonathan Jones, 21, bachelor, sigar [sic] maker, resident St Helier, born Plymouth, Devon; father: Henry Jones, cabinet maker
to Sarah Jane Rockett, 21, spinster, no occupation, resident St Helier; born St Helier; father:Joseph Rockett, shoemaker.
Witnesses: William Bellot and Louisa Wind? [
Ward - see 1861 census?](page 25 of the church Register)
St Helier register of birthsMary Ann Jones - Vol. 17. page 65?, 17 Aug 1860 - 30 Sept 1861
Susan Jones - Vol 19. page 82, 6 Nov 1862 - 9 Dec 1863
... and other Jones' in St Helier birth register
William Henry Jones - Vol.18, page 72, 9 Oct 1861 - 30 Oct 1862
Sarah Frances Jones - Vol.19. page 75, ibid.
Alice Jones - Vol.19. page 98, ibid.
Ada Marion Jones - Vol. 20. page 31, 9 Dec 1863 - 6 Jan 1865
Catherine Susan Jones - Vol. 20. page 54, ibid.
also
Elizabeth Jane Rockett - Vol.4. page 78, 24 Dec 1848 - 12 July 1847
Amos Rockett - Vol.6. page 40, 31 March 1848 - 20 April 1849
St Helier burials register 1822 - 1842:
30 Feb 1837 - Eliza, daughter of Joseph and Susan, 7 months
6 February 1837 - Joseph, son of Joseph and Susan, 3 years 2 months
St Helier register of deaths: Vol 1 - 24 examined for all
Rocketts:
Vol. 2 Feb 1844 - May 1845: Joseph, page 84; Jane, page 89;
Vol. 3 Jun 1845 - Dec 1846: William, page 99; Joseph, page 30;
Vol. 5. May 1848 - Aug 1849: Amos, apge 50;
Vol. 7. Aug 1850 - Dec 1851: Mary Rocket [sic] page 15;
Vol. 11. Dec 1855 - June 1857: Joseph, page 53;
Vol. 17. Oct 1862 - Feb 1866: Susan Grace, page 15;
Vol. 19. Feb 1867 - May 1868: Jemima, page 94;
Vol. 22. Feb 1871 - April 1872: Susan, page 80.
Census 1861 - St Helier:
District 7, page 73 -
JONES David, head, marr, 21, cigar maker, born England
Sarah J, wife, marr, 20, no occupation, born Jersey
District 27, page 128
ROCKET [sic] Susan, Head, widow, 51, tailoress, born England
HENLEY Susan, daughter, marr, 31, tailoress, born England.
WARD Louisa, daughter, marr, 23, tailoress, born St Helier
WARD Emma, granddaughter, 4, born St Helier
Census 1871 - St HelierNo David Jones
52 Don Street
ROCKETT Susan, Head, 61, widow, tailoress, born England
[2 boarders]
Census 1881 - St HelierNo relevant Jones found.
I hope you are now a bit further forward with your research.
Mike E