| G5 |
Joseph Guy (1741 - ) |
Elizabeth Feltham (1743 - ) |
John Thom. Bacon (1743 - 1821) |
Abigail Newman (ca 1750 - ) |
James Canter ( - ) |
Francis Palmer ( - ) | (unknown) | (unknown) | ||||||||
| G4 |
Richard Feltham Guy (1771 - 1831) |
Ann Bacon (ca 1790 - 1862) |
Richard Palmer Canter (ca 1795 - 1834) |
Mary Travers (ca 1795 - 1867) | ||||||||||||
| G3 |
Francis Guy (1820 - 1882) |
Mary Anne Canter (1826 - 1902) | ||||||||||||||
| G2 |
Richard John Guy (1855 - 1913) = (1) 1877 Mary Jane Mayne (1859 - 1882) = (2) 1884 Eleanor Josselyn (1858 - 1898) = (3) 1899 Emily Elizabeth Marshall (1871 - ca 1954) | |||||||||||||||
| G6 | unknown | unknown | unknown | unknown | unknown | unknown | unknown | unknown | ||||||||
| G6 |
John Guy ( - ) |
Mary unknown ( - ) |
Richard Feltham (1712 - ) |
Anne Stubbington ( - ) | ||||||||||||
| G5 |
Joseph Guy (1741 - ) |
Elizabeth Feltham (1743 - ) | ||||||||||||||
| G4 |
Richard Feltham Guy (1771 - 1831) = Ann Bacon (ca 1790 - 1862) | |||||||||||||||

Richard's sons carried on the family business and (while it has recently been sold to a multinational company) it still operates under that name today.
Richard's son Francis appears to have been the mainstay of the company and he and one of his brothers married two sisters from another Anglo-Irish family, the Canters, who were another Irish publishing company based in Limerick.
The name has several documented origins:
2. English
Occupational name for a guide, OF: gui. to guide.
3. Jewish
Of unknown origin
Variations
G(u)y, G(u)ye(e), Guido, Guidi, Ghio, Guiu, Guitte, Guyon, Guion, Guit(t)on, Wido, Wyd,
Why(e), Wye, Wyon, Wi, Why, V(u)itte, V(u)itton
Dimutives
Guiet, Guyet, Guiot, Guyot, Guyonnet, Guyonneau, Guit(t)et, Guitel, Guitonneau, Vit(t)et, Vuittet,
Guidelli, Guidetti, Guidini, Guiducci, Guiduzzi, Guidotti, Ghidelli, Ghidetti, Ghidini, Ghidoli,
Ghi(d)otti, Ghiotto, Vida
Augmented
Guidone, Guidoni, Ghi(d)oni, Ghion(e)
The website of Guy Etchells is an excellent source of information on the Guy name.