List of Non-Targ Westerosi In*cest Marriages

Tywin Lannister x Joanna Lannister (1st cousins)

-- Issue: Cersei, Jaime, and Tyrion

Rickard Stark x Lyarra Stark (1st cousins)

-- Issue: Brandon, Eddard "Ned", Lyanna, Benjen

Cregan Stark x Lynara Stark (just says "distant cousins")

-- Issue: Jonnel, Edric, Lyanna, Barthogan, Brandon

Serena Stark x Edric Stark (uncle-niece)

-- Issue: Cregard, Torrhen, Arrana, Aregelle

Sansa Stark x Jonnel Stark (uncle-niece)

-- Issue: NONE

Paxter Redwyne x Mina Tyrell (1st cousins)

-- Issue: Horas, Hobber, Desmera

Samantha Tarly x Lyonel Hightower (previously step mother-stepson)

-- Issue: 6 unknown children, all illegitimately born before their marriage

POSSIBLE CLOSE RELATIONS (exact degrees unknown)

Jon Arryn x Rowena Arryn

-- Issue: NONE

Shella Whent x Walter Whent

-- Issue: 4 unknown sons & 1 unknown daughter

Benfrey Frey x Jyanna Frey

-- Issue: Della & Osmund

Alys Frey x Jared Frey

-- Issue: Tytos & Kyra