19th Century Stoneware Jug With Blue Cobalt Flower Design

I found this wonderful antique stoneware jug in the basement of an old house in Lancaster, MA (my great-granduncle's old farmhouse)... other than the primitive flower design I can find no marking on this c1800s jug. Does anyone recognize the maker from the design? Any idea what this may be worth? I wonder if it may be a Norton pottery piece from Worcester, MA?

Anyone with any thoughts as to manufacturer, artist and / or value can please send me your information via email: jcs12367@gmail.com

THANKS~! :-)