endnotes.sty inserts unwanted text into fancy headers

Question

I have a document that uses fancyhdr (with fancy page style enabled), and also uses endnotes.sty to create endnotes. However, the pages that have endnotes on get the text "Notes" inserted into the header, which I do not want (the header should contain only a banner graphic). I can not find any hint in the endnotes.sty as to how to suppress this text in the header, can anyone advise?

Here is a simple tex script that generates the undesired behaviour as an example:

    %% LyX 2.1.1 created this file.
\documentclass[english]{extarticle}
\usepackage{mathpazo}
\usepackage{helvet}
\renewcommand{\familydefault}{\rmdefault}
\usepackage[T1]{fontenc}
\usepackage[latin9]{inputenc}
\usepackage[letterpaper]{geometry}
\geometry{verbose,tmargin=2cm,bmargin=2cm,lmargin=2cm,rmargin=2cm,headheight=1cm,headsep=1cm,footskip=1cm}
\usepackage{fancyhdr}
\pagestyle{fancy}
\setcounter{secnumdepth}{2}
\setcounter{tocdepth}{2}
\usepackage{color}
\usepackage{endnotes}
\makeatletter
\usepackage{lipsum}
\makeatother
\usepackage{babel}

\begin{document}
\title{\textcolor{blue}{Endnotes create unwanted text in the header of the
last page}}
\author{A.N. Other}
\maketitle
\subsection*{\lipsum[2]}
\lipsum[2-4]\endnote{This is an endnote}
\lipsum[5-10]
\theendnotes
\end{document}

Many thanks

Answer 1

endnotes.sty has

\def\enoteheading{\section*{\notesname
  \@mkboth{\MakeUppercase{\notesname}}{\MakeUppercase{\notesname}}}%
  \mbox{}\par\vskip-\baselineskip}

which updated the marks for the header. You can redefine this to something like

\renewcommand\enoteheading{\section*{\notesname}\mbox{}\par\vskip-\baselineskip}

A complete example:

\documentclass[english]{extarticle}
\usepackage{mathpazo}
\usepackage{helvet}
\renewcommand{\familydefault}{\rmdefault}
\usepackage[T1]{fontenc}
\usepackage[latin9]{inputenc}
\usepackage[letterpaper]{geometry}
\geometry{verbose,tmargin=2cm,bmargin=2cm,lmargin=2cm,rmargin=2cm,headheight=1cm,headsep=1cm,footskip=1cm}
\usepackage{fancyhdr}
\pagestyle{fancy}
\setcounter{secnumdepth}{2}
\setcounter{tocdepth}{2}
\usepackage{color}
\usepackage{endnotes}
\makeatletter
\usepackage{lipsum}
\makeatother
\usepackage{babel}

\renewcommand\enoteheading{\section*{\notesname}\mbox{}\par\vskip-\baselineskip}

\begin{document}
\title{\textcolor{blue}{Endnotes create unwanted text in the header of the
last page}}
\author{A.N. Other}
\maketitle
\subsection*{\lipsum[2]}
\lipsum[2-4]\endnote{This is an endnote}
\lipsum[5-10]
\theendnotes
\end{document}

The resulting document: