I'm trying to modify the font size of my page numbers in footers, but running into problems with the chapter page when using an epigraph. Here is my MWE:
\documentclass[12pt,oneside]{book}
\usepackage{epigraph, fancyhdr}
\newcommand{\changefont}{\fontsize{10}{11}\selectfont}
% clear plain page style
\fancypagestyle{plain}{
\fancyhf{}
\renewcommand{\headrulewidth}{0pt}
\fancyfoot[C]{\changefont \thepage}
}
\pagestyle{fancy}
\fancyhf{}
\fancyhead[LE]{\changefont \slshape \rightmark}
\fancyhead[RO]{\changefont \slshape \leftmark}
\fancyfoot[C]{\changefont \thepage}
\renewcommand{\chaptermark}[1]{%
\markboth{\chaptername
\ \thechapter.\ #1}{}}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{document}
\frontmatter{}
\fancyhead[LE,RO]{\changefont \slshape Acknowledgements}
\fancyfoot[C]{\changefont \thepage}
\chapter*{Acknowledgements}
\epigraphhead[70]{\epigraph{The isolated man does not develop any intellectual power. It is necessary for him to be immersed in an environment\ldots}{Alan Turing}}
Acknowledgements go here.
\end{document}
I've tried changing the epigraph pagestyle with the modified footer, using
\fancypagestyle{epigraph}{\fancyfoot[C]{\changefont \thepage}}
but this removes my epigraph. Any ideas?