Hello
Regarding the places near to Beaufront Castle, The National Archives (TNA), Kew and those Archives who have made returns (lists) of documents they hold, to PRO, now TNA (note you may find other documents too at Archives in paper indexes and on their online search catalogue, not submitted in returns lists and at other Archives) ...
Unless stated search dates 1500 to 1900
Search of ... Errington Sandhoe ...
http://discovery.nationalarchives.gov.uk/results/r?_aq=Errington%20Sandhoe&_dss=range&_sd=1500&_ed=1900&_ro=any&_st=advSearch of ... Errington Hexham ...
http://discovery.nationalarchives.gov.uk/results/r?_aq=Errington%20Hexham&_dss=range&_sd=1500&_ed=1900&_ro=any&_st=advSearch of ... Errington Anick ...
http://discovery.nationalarchives.gov.uk/results/r?_aq=Errington%20anick&_dss=range&_sd=1500&_ed=1900&_ro=any&_st=advSearch of ... Errington Carnaby ...
http://discovery.nationalarchives.gov.uk/results/r?_aq=Errington%20Carnaby&_dss=range&_sd=1500&_ed=1900&_ro=any&_st=advSearch of ... Errington Ogle
http://discovery.nationalarchives.gov.uk/results/r?_aq=Errington%20Ogle&_dss=range&_sd=1500&_ed=1900&_ro=any&_st=advSearch of ... "George Errington" 1500 to 1700 ...
http://discovery.nationalarchives.gov.uk/results/r?_ep=george%20Errington&_dss=range&_sd=1500&_ed=1700&_ro=any&_st=advIf visiting to see original documents in an Archive, you will need to formally prove who you are with some official document which has your photograph e.g. Passport AND prove your current permanent address you live at.
Some places require a 'letter of Introduction' sent beforehand, fortunately I knew the Chairman of my Local History Society and he wrote to the University Special Collections.
Always best to enquire well in advance and also advise which documents are of interest, as some are stored offsite and also due to cuts in funding, many Archives require from 3 working days to one Month's notice to retrieve documents and some Archives now have very limited opening days/times.
It looks like some of the Erringtons kept the Solicitors, Counsel and Judges very busy!
Chancery Case ExampleSeveral years ago, I had a Case, Nicholson v. Nicholson (from 1830 to 1838) photographed in digital colour at TNA, Kew (after paying the standard fee to get an Estimate), which consisted of five large sheets about a Gratrix. The Heir at Law was a child not old enough to inherit and the Trustees did not want to continue to administer the properties until the child came of age (Leaves were probably about 3 & 4 feet wide) and the 5 images were £40 (+ Estimate Fee).
The Judges ordered the properties be sold, which my 4 X Gt Grandfather acquired in 1838 according to Yorkshire Deed Registrations
. The Case Leaves were most interesting about the previous owner's family and transcribing a Will too, but my ancestor was obviously unrelated to them and not mentioned
Mark