For the launch, a 24-hour free trial is being offered until the end of November - details are on the site under Introductory Offer. After this, there will be a charge - although access may be available from some libraries in the same way as The Times Digital Archive.
The site gives the following details:
This archive will eventually contain the digital reproduction of every page, article and advert published in the Guardian (since 1821) and the Observer (since 1791 – the oldest Sunday paper in the world). For this launch the archive covers the period of 1821-1975 for the Guardian and 1900-1975 for the Observer as we are still working on digitising the remaining material. From early 2008 onwards the entire archive up to 2003 will be available – more than 1.2m pages covering all major historic events over 212 years as reported at the time.
The Guardian was originally The Manchester Guardian and the coverage of North West England is particularly good.
A search on "Daglish" produces 204 results - a mixture of news articles, announcements and adverts. One news article covers the inquest into the unfortunate death of Adelaide Daglish in 1905.