\indvdldef{家光}[三代]{家光}
\indvdldef{忠長}{忠長（駿河）}
\indvdldef{正之}{正之（保科）}
\sblngdef{秀忠の子}{家光,忠長,正之}
\fbox{\usebox{\秀忠の子}}
%
\newcommand{\boxsz}[1]{%
  \texttt{\textbackslash#1} & \nameuse{#1}\\%
}
\newcommand{\tblA}{%
  {%
    \footnotesize%
    \noautoxspacing%
    \begin{tabular}{l|l}%
      \boxsz{秀忠の子nameCY}%
      \boxsz{秀忠の子家光nameCY}%
      \boxsz{秀忠の子忠長nameCY}%
      \boxsz{秀忠の子正之nameCY}%
    \end{tabular}%
  }%
}
\ifmaketate
  \tatechuyoko{\tblA}
\else
  \par
  \bigskip
  \tblA
\fi