Where a plaintiff claims to be entitled to any equitable estate or right or to relief upon any equitable ground against any deed, instrument or contract, or against any right, title or claim whatsoever asserted by any defendant in the proceedings, or to any relief founded upon a legal right which formerly could only have been given by a court of equity, the Court shall give to the plaintiff the same relief as ought formerly to have been given by a court of equity in proceedings for the like purpose.