Here is what I have on your Frank Pearl:
Robert Pearl b. 30 Oct 1801, OH - 22 Aug 1874, OH
m. Nancy Morrow (dau. of James and Jane Ludington
Morrow) b. 1808, Greenbrier Co., WV - 1848 prob. OH
first child, Basil W. Pearl b. Jul 1829, OH - ?,
DeKalb Co., MO m. Julia Heath b. Apr
1832, OH - ?
first child, Robert Carl Pearl b. June 1856,
OH -1931, MO m. Alice Carrie Oyler
(dau. Samuel and Harriett
Wickersham Oyler) b. 30 May
1855, IL - 28 Jun 1940, Fairport,
DeKalb, MO
third child, Frank Pearl, b. Aug 1879,
IL - ? m. Effie Epperson
(dau. Leif and Mary Burris
Epperson) b. 30 May 1884,
DeKalb Co., MO - 11 Jul
1936, DeKalb Co., MO

There is another Franklin (Frank) Pearl, but he will be more distantly related to you. Also, just an FYI: I have not been able to connect Alice Carrie Oyler to the Gentry Co. Oylers yet.

Does this help you?