Attempt to avoid widow header in bumper booke A5.

'Morris tunes' in firstlines was on a line at the bottom of the page.

dottes.tex

@@ -6,6 +6,7 @@
 \usepackage{fontspec}
 \usepackage{graphicx}
 \usepackage{fancyhdr}
+\usepackage[defaultlines=4,all]{nowidow}
 \usepackage{tabularx}
 \usepackage{longtable}
 \usepackage[UKenglish]{babel}