Charles Decatur, s. of Charles Chandler?

I believe I am missing a generation in my lineage.

I have Charles Decatur Bigelow, b. 4 Dec. 1850, m. Florence A. Irons, d. 14 Apr. 1926 - listed as the son of:

Charles Chandler Bigelow, b. 18 Dec. 1807, m. Roxanna Sampson 20 Feb. 1829, d. 1 July 1890.

Those dates seem pretty improbable to me, and am thinking that there may be another generation between the two Charles. Does anyone have any further information on these two, or verification of their connection?

Thank you.