Magnús SIGMUNDSSON (ABT. 1722 - )
Mördur 'gígja' SIGMUNDSSON (ABT. 905 - )
Ofeigur SIGMUNDSSON (ABT. 1723 - )
Sigurdur 'fáfnisbani' SIGMUNDSSON (ABT. 735 - )
Sveinbjörn 'Súdvíkingur' SIGMUNDSSON (ABT. 1248 - )
SIGRÍDUR (1721 - )
Jóhanna Ottars SIGTRYGGSDÓTTIR (17 Mar 1985 - )
Hafsteinn SIGTRYGGSON (16 May 1991 - )
Halldór Hördur SIGTRYGGSON (22 Aug 1982 - )
Heidar Logi SIGTRYGGSON (11 Mar 1980 - )
Agnar SIGTRYGGSSON (ABT. 693 - )
SIGURBORG ( - )
Aslaug SIGURDARDÓTTIR (ABT. 800 - )
Aslaug SIGURDARDÓTTIR ( - )
Astrídur(Ingirídur) SIGURDARDÓTTIR ( - )
Erla Ingibjörg SIGURDARDÓTTIR (18 Sep 1938 - )
Gudrídur SIGURDARDÓTTIR (ABT. 1518 - )
Gudrún SIGURDARDÓTTIR ( - )
Gudrún SIGURDARDÓTTIR (ABT. 1733 - )