Devon html syntax errors

On pageLinkProblemDetected
http://genuki.cs.ncl.ac.uk/DEV/DevonIndexes/Walrond1897b.html4 html syntax errors
line (66:27) Warning: unescaped & which should be written as &
 line (732:28) Warning: unescaped & which should be written as &
 line (1290:29) Warning: unescaped & which should be written as &
 line (1599:43) Warning: unescaped & which should be written as &
1 May 2015
http://genuki.cs.ncl.ac.uk/DEV/index.html2 html syntax errors
line (792:126) Warning: unescaped & or unknown entity "&form"
 line (792:140) Warning: unescaped & or unknown entity "&county"
1 May 2015

2 problems found.