factioner

Noun

A member of a faction.

Japanese Meaning

派閥の一員 / 派閥の構成員

The factioner quietly distributed leaflets to rally support for the new leadership.

その派閥の一員は、新しい指導体制への支持を集めるために静かにビラを配った。

Sense（1）

A member of a faction.

[…] as if all the Factioners had entered into such a seditious Conspiracy […]

factioners

（ plural ）