Provided alwaies That if any Person or Persons by reason of his her or their having severall Mansion Houses or Places of Residence or otherwise shall be doubly charged for any Personall Estate by occasion of this Act then upon Certificate made by any Two or more of the Commissioners for the County Riding City or Place of his her or their last Personall Residence under their Hands and Seales of the Sum or Sums charged upon him her or them (which Certificate the said Commissioners are required to give without Delay Fee or Reward) and upon Oath made of such Certificate before any one Justice of the Peace of the County or Place where the said Certificate shall be made (which Oath the said Justice of the Peace is hereby authorized and required to administer) then the Person or Persons so doubly charged shall for so much as shall be so certified be discharged in every other County City or Place