We are just informed by a gentleman from Philadelphia, that an express arrived in that city on Sunday afternoon with an account that the Roebuck man of war of 44 guns, being in chase of two brigs, run aground on the East Bank of Brandywine, in Delaware Bay, at high water; on the arrival of the express the committee of safety met, and sent down eight armed Gondolas, and two ships, one of them the Province ship, mounting 14 eighteen pounders, and the other 16 six pounders; the Gondolas went off in a few hours after the express arrived, and the ships at 10 at night. Great numbers of Volunteers went, and more offered themselves than the vessels could contain.