The royalists lay siege to the castle .
Fox led a relief column , but it was intercepted and routed by royalists under the command of Sir Gilbert Gerard , the Governor of Worcester , in an action on Stourbridge Heath .
The royalists lay siege to the castle , so Fox led a relief column , but it was intercepted and routed by royalists under the command of Sir Gilbert Gerard , the Governor of Worcester , in an action on Stourbridge Heath .