• (n.) The party who makes a covenant.
Covenantors sought to preserve a hard-line Presbyterianism and opposed any Royal impositions into the affairs of the church. The predominantly Scottish Covenantors put forward their ideas in The Solemn League and Covenant as well as the Scottish National Covenant, to both King Charles I and parliament. They were severely oppressed by King Charles ...
Cov'e·nant·or` noun (Law) The party who makes a covenant. Burrill. 
Series of cruiser tanks [UK]
the party who is to perform the obligation expressed in a covenant.