Use full ISO-690 capitalisation style in footnotes

I'm using a biber backend with a minimal example repo trying to replicate the formal guidelines that my university institute imposes on me.

They require ISO-690 citations, in particular LASTNAME Firstname capitalisation everywhere.

I am aware of the iso-authoryear style which does pretty much what I need, except in footnotes. We are required to cite using footnotes in a verbose-ibid fashion, but the footnotes do not keep the LASTNAME capitalisation unfortunately.

Minimal TeX code:

\documentclass{scrartcl}

\usepackage[
backend=biber,
style=iso-authoryear,
citestyle=verbose-ibid,
abbreviate=false,
block=space,
sortlocale=de_DE,
autolang=other
]{biblatex}

\begin{document}

\section{How to quote}
Direct quotes are very useful if done right according to the guidelines of my institute.\footcite{muster:quellen}

\printbibliography

\end{document}

% Encoding: UTF-8
@Book{muster:quellen,
title     = {Der Sinn von Quellenangaben. Eine unkritische Auseinandersetzung},
publisher = {Testverlag},
year      = {2014},
author    = {Mustermann, Max},
}


This yields the following example when compiling with lualatex:

How can I achieve a setting of MUSTERMANN, Max (and similar capitalisation for other authors) even in the footnote?

• I've taken the liberty of changing the "BibTeX" tag to "biblatex". – Mico Jan 23 at 13:27
• @Mico Yes indeed, I was a bit sloppy with the suggested tags. Thank you for paying attention to the details :) – suushiemaniac Jan 24 at 9:25

biblatex-iso690 uses the internal command \lastnameformat (which will probably be renamed to \familynameformat soon, so if the answer ceases to work, try \familynameformat in the code below instead) to format the family name in the bibliography. If you want the name format to apply almost everywhere, try

\documentclass[english,ngerman]{article}
\usepackage{babel}
\usepackage{csquotes}

\usepackage[
backend=biber,
style=iso-authoryear,
citestyle=verbose-ibid,
abbreviate=false,
autolang=other
]{biblatex}

\renewcommand\mkbibnamefamily{\lastnameformat}


• Thank you very much, it works like a charm! Where can I read up on those \mkbibnamefamily-style commands? I want to learn how to make fixes like these myself, but the documentation seems a little "overkill" for finding specific detail information like this… – suushiemaniac Jan 24 at 9:24
• @suushiemaniac \mkbibnamefamily is documented in the biblatex manual (p. 289 in v3.14), but in order to know what to do in the first place it is usually quickest to just check the source code of the style. The biblatex manual for the most parts documents only the biblatex core and some higher-level bits of the standard styles. If you are using a custom style, you can try and check back with its documentation, but usually they don't contain elaborate explanations about additional possible modifications that go beyond the style they implement. – moewe Jan 24 at 14:43