Late 15th century; earliest use found in Reginald Pecock (c1392–?1459), bishop of Chichester and religious author. From son + -hood, probably after fatherhood.
Definition of sonhood in US English:
sonhood
nounˈsʌnhʊd
The state, condition, or fact of being a son.
Origin
Late 15th century; earliest use found in Reginald Pecock (c1392–?1459), bishop of Chichester and religious author. From son + -hood, probably after fatherhood.