When Elizabeth's grandfather retired from his bookkeeper position in Philadelphia, he began to put the grandest name that he could think of as his return address on his mail.  The name he came up with was "Mansion Avenue".  When street signs were erected later in the town "Mansion Avenue" became official.  It remained so until years later when the name was changed to Warwick Road as it is now called.  Also at that time Highland Avenue was renamed Chews Landing Road.