Hannafords at Durham Lead, south of Ballarat, Victoria, Australia 1864-1870
I always knew there was a Ballarat connection way back in the family because some of my mothers photograph collection had Ballarat photographers names on them.  She told me her paternal Grandmother was originally Louisa Hannaford from Ballarat and that is pretty much what I knew until the 1990's when I searched a "Pioneers" CD in a Melbourne library and found entries for several relatives BMD data from both sides of the family.
The death notice 14 March 1869 for Louisa's father John Pitts Hannaford was noted Durham Lead which is a 19C gold mining village ~20km south of Ballarat, see pink X distances are kms.
I have some information on what is known of Louisa's life online.
Photographs and pictures that she saved in an album.
Late in 2013 I contacted the  Ballarat and District Genealogy Society to tell them of this collection of 19C Ballarat and Melbourne photos and pictures.  I have learned much useful information  from the Editor of  "Ballarat Link"  the Societies mailed out newsletter including this mention of the 1869 inquest for John Pitts Hannaford in the "Ballarat Star" newspaper as preserved online in Trove of the National Library of Australia.
The full text from Trove is further below but the main new points of interest are in timeline order.
We now know JPH worked as a draper for Messrs Jones and Christie in Ballarat circa ~1860-1864.
He was in business for himself  as a draper for five years on the Durham Lead.
The family lived not too far from the Pioneer Hotel where the owner was Mr Charlton.
JPH had been unwell for two months.
He was found early at night drowned in a water-hole in his garden.
From other sources we know he was 38 years old and a native of  Torquay in Devonshire.
We know that his wife and eldest son 9 died the following year and from then we know nothing of  the orphaned Louisa and Tom until they turn up in Fiji a decade later.
19C map of the Durham Lead Township - the southern pink C is probable site of the Pioneer Hotel.
Google Earth map - the southern pink C is probable site of the Pioneer Hotel. The creek shape and roads fit OK with the 19C map.

Text from The Ballarat Star. DAILY ISSUE, Wednesday 17 March 1869
A distressing occurrence took place at the Durham Lead on Sunday evening last. Mr J. P. Hannaford, who is well known in Ballarat, being formerly in the employ of Messrs Jones and Christie, drapers, but who has been in business for himself for the last five years on the Durham Lead, was found dead in a water-hole in his own garden. The story is best told in the words of the witnesses examined at the inquest held on Monday last.
Louisa Elizabeth Hannaford, being sworn, said - The deceased, John Pitts Hannaford, was my husband. He kept a drapery store on the Durham Lead. He went to bed about seven o'clock on Sunday evening. I followed him to bed ten minutes after I went to bed my husband got up and dressed himself and went into the yard. He was in the habit of going out about four or five times every night. On this occasion, after he had been out about ten minutes, I became uneasy and went out and began to search for him, but could not find him. I then sent my maid-servant to the Pioneer Hotel to ask if he was there. He was not there I then sent back and requested Mr Charlton, the landlord of the hotel, to come and assist in looking for my husband. He came. I said, "Look everywhere, Mr Charlton, and look in the water-hole in the garden, it is a very dangerous place." I was near Mr Charlton when he looked into the water-hole. Mr Scisson was present. Mr Charlton requested Mr Scisson to take me inside. I did not go in until I saw them take my husband out of the water-hole. They brought my husband into the house and used every means to re store animation. They sent for the police. It could not have been more than twenty minutes from the time he left me in bed until he was found in the water-hole. He had been in very low spirits for some time, but I had no reason to think that he contemplated suicide. He had been under medical treatment for the last two months. I followed him out because he was subject to fits. The fits were fainting fits. I am sure the cover was on the water-hole at seven o'clock on Sunday evening, because Mr Hannaford, the children, and I were in the garden. There was no fastening to the cover. My husband has not shaved for a long time, and although he had a razor like the one produced I cannot identify it.
Mr Charlton deposed to finding the body as stated.
Constable Fudger deposed to being called in. He examined the water-hole. It was 5 feet deep, and had 2 feet 4 inches of water at the bottom. It was covered over with timber and earth, except a square opening 14 inches by 16 inches. To this opening there was a cover. He found the razor produced close to the water-hole. It was wrapped in paper, and both paper and razor were besmeared with blood.
Dr McEwan deposed to examining the body externally. There were no marks of violence except a few abrasions under the chin. These might have been caused by falling against anything. They could not have been caused by the razor produced nor by any other sharp instrument, not being incised wounds. In my opinion death was caused by asphyxia produced by drowning.
The following verdict was returned: -"The body of deceased was found in a water-hole on his own premises on the 14th instant, and that asphyxia from drowning in said water-hole on said date was the cause of death."
The deceased was much respected by a large circle of acquaintances.