\indvdldef{youngSybil}{Lady Sybil}
\indvdldef{youngEdith}{Lady Edith}
\indvdldef{youngMary}{Lady Mary}
\sblngdef{youngSis}{youngMary,youngEdith,youngSybil}

\indvdldef{Robert}{Robert Crawley}
          [7th Earl of Grantham,\maleline][2em]
\pcdef{RobertDaughters}{Robert}{youngSis}

\indvdldef{Rosamund}{Rosamund Painswick}
\sblngdef{RobertRosamund}{RobertDaughters,Rosamund}
\fbox{\usebox{\RobertRosamund}}