The two people you mentioned are in the following line.  This line is decended from Stephen Longwell of the Rev. War and on back to John and Elizabelth Longwell.

If you can update the lines or would like the earlier decendents let me
know.

Thanks
Bob Longwell

Descendants of James M. Longwell
 
        1       James M. Longwell       b: January 18, 1815 in Stamford, Fairfield Co, CT        d:
1897 in IA.
.               +Eliza J.
                *2nd Wife of James M. Longwell:
.               +Margaret T. Winslow    b: February 13, 1815 in New York d: November 18, 1851
in Masedonia Cem An, Wyandotte, Ohio
........        2       Phoebe J. Longwell      b: 1837 in OH.
........        2       John Wesley Longwell    b: 1838 in OH.  d: December 04, 1850
........        2       Henry Fish Longwell     b: 1841 d: February 16, 1843 in OH
........        2       Langdon B. Longwell     b: 1846 in OH.
............            +Lorinda Barber b: 1849
..................      3       Jennie Longwell b: 1870 in St. Louis, Gratiot County, MI.
......................          +Edwin F. Ingersoll     b: 1867
.............................   4       Bessie Ingersoll
.............................   4       Viva Ingersoll
.............................   4       Pearl Marie Ingersoll