Local History
http://communities.northumberland.gov.uk is a site set up & maintained by Northumberland County Record Office which has premises at Melton Park, Gosforth, Newcastle upon Tyne (local history) and at Morpeth Records Centre, The Kylins, Loansdean, Morpeth (family history). It includes Ordnance Survey maps, plans, photographs, manuscripts, printed material, census information and sound recordings for many Northumberland towns and villages, including Seaton Sluice, which are listed alphabetically.
Family History
www.genuki.org.uk is an extremely useful free website for those researching family history. Select the county of Northumberland to find the locations of parish church records (e.g. Old Hartley, Seaton Sluice and Seaton Delaval Hall all lie within the parish of Earsdon, St. Alban), cemetery records, voting lists, etc. Many of these records can be examined either in the Local Studies Section of the Central Library, Princess Square, Newcastle upon Tyne or at Morpeth Records Centre (see The Kylins above).
www.familysearch.org provides free access to the International Genealogical Index ( IGI ), a huge database of mainly Births and Marriages drawn up from Parish Records by the American Mormon Church. The UK records are divided according to County boundaries. Not all Parish Records have been made available for inclusion. The site includes the 1881 Census and will also help you find your nearest Mormon Family History Centre.
www.ndfhs.org.uk is the website of the Northumberland and Durham Family History Society, an organisation which you could well find very useful in helping to establish local ancestry.
http://images.freebmd.org.uk provides free access to information relating to Births, Marriages & Deaths.
If you are unable to attend one of the record offices or libraries listed above http:www.1837online.com has all the Births, Marriages & Deaths records for England & Wales from that date, although it is a pay-to-view site, as is www.1901census.nationalarchives.gov.uk
Records of tombstones in the chuchyard of Our Lady of Seaton (at Seaton Delaval Hall) can be viewed at Northumberland County Record Office and at Seaton Sluice County Library, Albert Rd, Seaton Sluice. Lists of members of Seaton Sluice Volunteer life-Saving Company can be consulted at the latter.