“The policy in question, was effected on the 27th of June, 1807, on goods, the property of the plaintiff, an American citizen, on board the Little William, belonging to Jacob Sperry, also an American citizen, at and from Philadelphia to Tonningen, or Hamburg, if not blockaded; warranted American property, proof whereof to be made here. She sailed on the voyage insured, on the 3d of July 1807.