Wight - Infant son of ???

William,

I am curious as to the source of Infant son being the child of Marcus and Cemantha. I have searched and can only find it mentioned on Family Search and other family trees, but no source given. The only infant son I have found at the time is listed below; the information is from Find a Grave.

Infant Son Wight
BIRTH
15 Mar 1863
Otisfield, Oxford County, Maine, USA
DEATH
15 Mar 1863
Maine, USA
BURIAL
Bolster's Mills Cemetery
Harrison, Cumberland County, Maine, USA
MEMORIAL ID
76807479
Son of Nathaniel Scribner Wight and Martha Ellen Edwards.

Inscription
INFANT,
son of
N. S. & M. E.
WIGHT
died
Mar. 15, 1863
Family Members
Parents
Nathaniel Wight
Nathaniel Scribner Wight
1832–1887

Martha Wight
Martha Ellen Edwards Wight
1842–1928