I have previously written a little about Arthur Ellis Franklin, whose copy of the Selichos book of his day is in my collection. You can read about that here.
He compiled this important family history, which was printed for private circulation in 1915. This book was obviously the result of much research, carried out long before modern digital communications were available. As well as the history of the prominent Franklin family, it includes many branches and has information about other Anglo-Jewish families who had established their presence in the British Isles well before the mass immigration from Eastern Europe.
You can also read below (on page 27) about Jacob Franklin, the founder of the first Anglo-Jewish newspaper, the Voice of Jacob, which I have written about here.
Here is the preface, table of contents and a sample of the historical details and genealogies that are recorded in this important (and scarce) book: