Go into reverse to go forward through a brick wall.
- LAND - where did siblings and children have property, did your ancestor have property in the same area? Did they go to the same local church?
- CENSUS - I have found several people living with their children or in the same house as a sister/brother, and of course census records will give you a great deal of information. Don't forget to look at the neighbours - are they in the same trade? Where did they go to next?
- VOTER REGISTRATION - In Australia that means the Electoral Roll. Again, you are looking for a location that might give you a vital clue.
- OLD BOOKS - try the google books search for local histories where your ancestor might have lived. (eg. History of Goulburn). In Australia, there are lots of books about the early settlement of particular towns and areas, and they often list the 'pioneers' of the town.
- NEWSPAPERS - Trove.nla.gov.au is the best resource for Australia. Search for the names of children and siblings. You may find a notice that lists the siblings and children, plus where they are living at the time. You could even find an obituary.
- FIND A GRAVE - through this site, you may find ancestors buried with their children, spouse, or other family members.
- FAMILY HISTORY ASSOCIATIONS - these are a great resource in Australia, and if you are fairly sure of a family's links to a particular town, they may be able to help.
This gave me the information that Elsie May, youngest son of the late James Colyer and Mrs Liddle - was getting married. Actually her name was Colyer, but it had not been listed that way. Another daughter had a similar announcement just a year later. This confirmed that Sophie (Ryan) Colyer, must have married a man called Liddle. That led me to find the marriage and Sophie's death. It also gave me a connection to Marrickville.
IMPORTANT TIP - It is very easy to get lost in this type of research, and go over ground you have already researched, so my best tip is to keep a log of what searches you do, and what names you use. That way you will not (hopefully!) get lost.
So if you have a brick wall, try reverse genealogy and look for clues about your ancestor in their extended family.