example24.tex

\documentclass[openany]{book}
\usepackage{lipsum}
\usepackage{boxedminipage}
\usepackage{fancyhdr}
\pagestyle{fancy}
\newcommand{\TheAuthor}{}
\newcommand{\Author}[1]{\renewcommand{\TheAuthor}{#1}\textbf{\large\TheAuthor}\vspace{1cm}\par}
\fancyhead[LE,RO]{\TheAuthor}

\begin{document}

\pagenumbering{roman}
\tableofcontents
\bigskip

\noindent
\begin{boxedminipage}{\textwidth}
This is example 24 in the fancyhdr documentation.

Each chapter is written by a different author
and we want the name of the author in the header opposite the chapter
title. We define the \verb|\Author| command to set the author name in the macro \verb|\TheAuthor|.
We also let that command typeset the author name under the chapter title, so we use the following commands:

\begin{verbatim}
\newcommand{\TheAuthor}{}
\newcommand{\Author}[1]{\renewcommand{\TheAuthor}{#1}
                    \textbf{\large\TheAuthor}\vspace{1cm}\par}
\fancyhead[LE,RO]{\TheAuthor}
 . . .
\chapter{Chapter Title}
\Author{Author Name}
\end{verbatim}
\end{boxedminipage}

\newpage
\pagenumbering{arabic}
\chapter{Introduction}
\Author{K.N. Uth}
\lipsum

\section{The Problem}
\label{sec:problem}

\lipsum[1]

\section{Evaluation}

\lipsum

Some more text.

Some more text.

Some more text.

Some more text.

\chapter{Another chapter}
\Author{L.A.M. Port}
\label{cha:another-chapter}

\lipsum[2]

\section{Another section}

\lipsum[3-5]

\end{document}