Hi Katherine
Sorry, somehow I missed this post before. But I'm afraid I don't have any information on the 5 Barcoes found in 17th century Norfolk - it was somebody else who originally mentioned them.
My Barcoe "line" starts with Elizabeth Barcoes, who married William Mallett (not directly related to me) 9 July 1799 Hardingham, Norfolk; then Joseph Carter ( my 4 x great grandfather) 8 Nov 1802 Hardingham. Their son Mark Barcoe Carter was christened 14 Aug 1803 Hardingham.
John