Found in 1850 Census the following which only helps to confuse the matter even more _

Freetown, Bristol, Mass., 7 Sept. 1850, By: Eben Luther, page 155

Rounseville Macomber, 50, M, Laborer, Mass.
Deborah Rider, 45, F, Mass.
Salome " , 6, F, Mass., attended school.

In the next listing is ---

Deborah Rider, 70, F, Mass., can not read or write.
Daniel Howland, 68, M, none, Mass., can not read or write.

Freetown VR book lists
Macomber A. Rounseville, (mrd) s, Abiel & Betsey, about 50y ... 5 Oct 1854 [marriage record for Abiel & Betsey Ashley, 20 Jul 1803]No birth listed for Macomber in Freetown.

Hope this helps.