warrantor

The scope of the ancient obligation was not extended without the warrantor's assent.

And that every man know his warrantor for men and for horses and for oxen.

Now, the seller had better beware of what he says, for he may find himself liable as a warrantor.

A disseisor was no more bound by the confidence reposed in his disseisee, than he was entitled to vouch his disseisee's warrantor.