_orsteinn INGÓLFSSON (ABT. 880 - )
INGRAM ( - )
INGUI ( - )
INGVAR (ABT. 834 - )
Bera INGVARSDÓTTIR (ABT. 860 - )
Margrét Adalbjörg INGVARSDÓTTIR ( - )
_órdís INGVARSDÓTTIR (ABT. 862 - )
Önundur 'braut-Önundur' INGVARSSON (ABT. 638 - )
Erlendur Örn INGVASON (4 Jan 1966 - )
Jóhann Örn INGVASON (24 Oct 1968 - )
Garcia INIQUEZ ( - 880)
IRMGARD ( - )
ISA-STEINGRÍMSSON (ABT. 1070 - )
ISAAC ( - )
Margrét J. ISDAL (9 Mar 1956 - )
Gudrún ISLEIFSDÓTTIR (ABT. 1763 - 8 Dec 1831)
_óra 'brók' ISLEIFSDÓTTIR (ABT. 1420 - )
Eiríkur ISLEIFSSON (ABT. 1310 - )
Eyjólfur ISLEIFSSON (ABT. 1600 - )