I can not tell you anything about Matthew. But my Leyhs came also from the Dinkelsbühl area, perhaps it will help you, a little bit. They moved to Thuringia, so there can not be a dirct connection. *Johann Friedrich Ley(h) and Maria Katharina(Keuss?) *Johann Georg Wilhelm Ley (born 1785 in Mönchsroth, near Dinkelsbühl) and Maria Gertrud Eckmayr from Arberg. *Marie Christine Leyh (1806 Mönchsroth) *Franz Joseph Leyh (1825 Mönchsroth) he moved to the "north". Perhaps you will connect them later, could you give me a mail, if you can see a connection.