Yes, I have a lot of info on this family, especially going back.
It appears that George Janeway (1802-1876) m. 1) Margaret Phoenix c. 1826, no issue, m. 2) Ann Amelia Stelle and had three children
1. George, b. ?, d. 1898, m. Virginia (-), had a son Edmund Janeway, b. 1871
George's line is as follows:
William Janeway-1 of NYC , the immigrant (1659-1708)/Agnes De Kay;
Jacob Janeway-2 (1707-1746)/Sarah Hoagland;
Capt. George Janeway-3 (1742-1826)/Aefje Ten Eyck;
William W. Janeway-4 (1772-1814)/Sarah Van Zandt;
George Janeway-5 (1802-1876).
This line also ties back to 5 generations of Janeways in England.
Let me know if you'd like more info and I can email it to you.