James Gorton Brooker, a Cumberland Quaker genealogist active in the first half of the 20th century, researched his own ancestry and many other families, I think mostly related to his. He compiled and laid out over 100 family trees based on his researches, and printed them on his own small printing press.
I have one in my possession, and others in my family have others. I expect that many people descended from the families concerned have copies.
There are also full sets in the Society of Genealogists in London and, I understand, in Carlisle Record Office.
The ones at the SoG are in rather poor condition. I've half a mind to ask permission to digitally photograph and upload them so that interested researchers can look at the content. Perhaps even transcribe to text and ultimately comment on what can be verified or corrected. If anyone would be interested in such an enterprise please let me know - mailto link at the foot of the page.
I have some photos which I don't have permission to upload but I'll make some notes here in due course.
I have so far identified the following Brooker pedigrees as relating to my own ancestors (numbers from the SoG set):
Mainly relates to Allason (1)
Also mentions:
Robinson (2)
Robinson (3)
Mainly relates to Robinson (3)
Allason (1)
Barn
Harris
Mainly relates to Williamson (1)
Also mentions:
Beeby
Bowes
Pattinson
Robinson (2)
Robson
Tickell
Tomlinson
Mainly relates to Wilson (1)
Also mentions:
Allason (2)
Steel (2)
Robinson (2)
Williamson (1)
Mainly relates to Robinson (2)
Also mentions:
Allason (1)
Pearson (4)
Robinson (3)
Tiffin
Williamson (1)
Wilson (2)
Mainly related to Harris
Also mentions:
Robinson (3)
Rogers
A section of this tree relates to Robinson (3), to a large extent repeating what is in tree 52.
Also mentions:
Allason (1)
Harris
Rogers
Williamson (1)
The second of the two trees on this sheet relates to Allason (2)
Also mentions:
Wilson (1)
If you have any comments on these pedigrees, common research interests, etc., I'll be pleased to hear from you. Email me at deletethis.ianwilliamson161@gmail.com though obviously you edit the email address before you send - make it just my name, number @ service provider. Please do not delete the automatically-generated subject line, so that I know your email is not spam. You can add more to the subject if you like but if you delete what appears I may not read your mail.