There is quite a bit of Information for genealogists on this site - it is best accessed using the search feature above. Note that I have almost zero additional information - it is all on the web site. If you contact me, I will be polite but I don’t have any additional information. The best additional source of info for researchers is at the Cobourg Library where they have a local history room stocked with many historical books and documents. They do have some photos on-line but not much more - you need to visit.
To understand history, it is inevitable that one must understand exactly when things happened and that means dates.
The Cobourg Museum Foundation has produced an interactive time line - you can see a copy here. It's a useful view of the history of Cobourg in an interactive condensed format. Thanks to the Cobourg Museum Foundation for providing this tool.
In addition, there are other articles in this section which give insights into important dates in Cobourg.