\sblngboxcfg{1ex}
\indvdldef{youngSybil}{Lady Sybil}
\indvdldef{youngEdith}{Lady Edith}
\indvdldef{youngMary}{Lady Mary}
\sblngdef{youngSis}{youngMary,youngEdith,youngSybil}
%\fbox{\usebox{\youngSis}}

\indvdldef{Robert}{Robert Crawley}[7th Earl of Grantham]

\pcdef{family}{Robert}{RobertRosamund}
\fbox{\usebox{\family}}