Many thanks smith41. Thomas vivian williams born c1835 ?Cornwall
Married Honor Dunn Trevorrow 1859 cornwall (suggestion Honor was simply Honor Dunn)
Died 1887 Caltowie South Australia.
Slight suggestion that Thomas might have been Welsh
His father ?? John, Mother Martha unknown.
I can't go back further.
Cheers,

Max

I have a few questions, the answers that might help in the search.

Do you have a copy of marriage certificate to verify details of spouse and parents.

I couldn't find any marriage for Thomas Williams in 1855-1865 in Cornwall or any in other county for Thomas to a Honor or Dunn or Trevorrow.

Do you have a copy of his death Certificate and who was the informant on the certificate? sometimes the details are not always accurate.

Do you know when he arrived in Australia?

Do you have a copy of birth certificate for one if children, usually has marriage details listed.

Do you know names of children and when & where born?

I know that's a lot to answer but it may narrow down the search, if you don't have documents it may be worthwhile getting copies and verifying details.

MARRIAGE.

Groom: Thomas WILLIAMS.
Age: 22 years.
Status: Not recorded.
Father: John WILLIAMS.

Bride: Honor DUN. (One N)
Age: 18 years.
Status: Not recorded.
Father: William Trevonow DUNN.

Date married: 19 September 1859.
Place: Residence of James WAY, Kooringa, South Australia.

Ref: Registry of Marriages, South Australia. Book 40 Page 254.

Is this your Thomas no mention of middle name

Australia Death Index
Name: Thomas Williams
Birth Year: abt 1836
Age: 51
Death Date: 04 Aug 1887
Death Place: Caltowie
Residence Place: Caltowie
Registration Place: Clare, South Australia
Page Number: 146
Volume Number: 165


Australian Birth Index

Name: John Williams
Birth Date: 17 Aug 1860
Father's name: Thomas Williams
Mother's name: Honor Dunn Treverrow
Birth Place: Kooringa
Registration Place: Burra, South Australia
Page Number: 497
Volume Number: 19

Name: Thomas Williams
Birth Date: 20 Oct 1861
Father's name: Thomas Williams
Mother's name: Honor Treverrow
Birth Place: Kooringa
Registration Place: Burra, South Australia
Page Number: 500
Volume Number: 23

Name: John Williams
Birth Date: 22 Jun 1863
Father's name: Thomas Williams
Mother's name: Honor Treverrow
Birth Place: Kooringa
Registration Place: Burra, South Australia
Page Number: 68
Volume Number: 29

This could possibly be Honors birth
Births Jun 1841
Trevorrow Honor Dunn Penzance 9 198

This could possibly be the marriage
Name: Thomas Williams
Father's name: John Williams
Spouse Name: Honor Dun
Spouse's Father's Name: William Trevonow Dun
Marriage Date: 19 Sep 1859
Marriage Place: Kooringa
Registration Place: Burra, South Australia
Page Number: 254
Volume Number: 40

Copies will help with further details

There is a Treverrow/Trevorrow family in 1851 Census in St Ives Cornwall Father William, Mother Honor

Five children located for Thomas and Honor.

1.
Name: John WILLIAMS.
Born: 17 August 1860, Kooringa, South Australia.
Father: Thomas WILLIAMS.
Mother: Honor Dunn TREVERROW.

2.
Name: Thomas WILLIAMS.
Born: 20 October 1861, Kooringa, South Australia.
Father: Thomas WILLIAMS.
Mother: Honor TREVERROW.

3.
Name: John WILLIAMS.
Born: 22 06 1863, Kooringa, South Australia.
Father: Thomas WILLIAMS.
Mother: Honor TREVERROW.

4.
Name: William WILLIAMS.
Born: 05 November 1864, Blinman Mine, South Australia.
Father: Thomas WILLIAMS.
Mother: Honor TREVORROW.

5.
Name: William WILLIAMS.
Born: 10 September 1867, Koringa, South Australia.
Father: Thomas WILLIAMS.
Mother: Honor TREVERROW.

Going by the given names for children it looks like the first few died young but I have not searched the death records. If you don't have the death details I'm happy to have a look for you.

Thanks tonkin and ashepard,I have seen all the information you have provided, but it doesn't help. Especially if Honor seems to be both a "Dun" and a Trevorrow.
On her marriage cert she has signed as Honor Dunn. Her father is stated as William Trevono Dunn. ?transcription error, or different person?

regards Max

This is looks like Honor's birth reg and she is named as Honor Dunn Trevorrow. If you want to know her parents names for certain you need to get the birth cert.

England and Wales Birth Registration Index
Name Honor Dunn Trevorrow
Event Type Birth Registration
Registration Quarter Apr-May-Jun
Registration Year 1841
Registration District Penzance
County Cornwall
Event Place Penzance, Cornwall, England
Volume 9
Page 198
Line Number 27

As far as I know this is not a family member in your line but it does prove that Dunn Trevorrow is an established name in Cornwall.

England Births and Christenings
Name Jane Dunn Trevorrow
Gender Female
Christening Date 18 Jul 1817
Christening Place St. Ives, Cornwall, England
Father's Name David Trevorrow
Mother's Name Eleanor

Have sou tried this site: http://www.cornwall-opc-database.org/

1941
Name: Honor Trevorrow
Age: 1 Mo
Estimated birth year: abt 1841
Gender: Female
Where born: Cornwall, England
Civil Parish: St Ives
Hundred: Penwith
County/Island: Cornwall
Country: England
Occupation: Miner

Wm Trevorrow 24
Honor Trevorrow 22
Honor Trevorrow 1 Mo

Marriage:
Name: William Trevorrow
Gender: Male
Marriage Date: 27 Dec 1840
Marriage Place: St Ives, Cornwall, England
Father: John Trevorrow
Spouse: Honour Neptune
FHL Film Number: 1595679
Reference ID: p 92

1851
Name: William Trevorrow
Age: 33
Estimated birth year: abt 1818
Relation: Head
Spouse's Name: Honour Trevorrow
Gender: Male
Where born: St Ives, Cornwall, England
Civil Parish: St Ives
Phillimore Ecclesiastical Parish Maps:
View related Ecclesiastical Parish
Town: St Ives
County/Island: Cornwall
Country: England

William Trevorrow 33
Honour Trevorrow 30
Honour Trevorrow 9
Ann Trevorrow 7
Mary Trevorrow 6
Elizabeth Trevorrow 3
William Trevorrow 1

This is possibly William & Honors Marriage

Day Month 27-Dec
Year 1840
Parish Or Reg District Ives, St.
Groom Fn William
Groom Sn TREVORROW
Groom Age of full ag
Groom Residence St Ives
Groom Condition bachelor
Groom Rank Profession miner
Groom Signed / Marked (S/M) M
Groom Father Name John
Groom Father Rank Profession miner
Bride Fn Honour
Bride Sn NEPTUNE
Bride Age of full ag
Bride Residence St Ives
Bride Condition spinster
Bride Rank Profession
Bride Signed / Marked (S/M) M
Bride Father Name Richard
Bride Father Rank Profession H M Customs
Banns / Licence (B/L) B
Witness Fn1 Thomas
Witness Sn1 Williams
Witness Fn2 Richard
Witness Sn2 Neptune (mark)
Other Information
Transcriber Notes
Transcriber Karen Duvall