Louise Beatrice Stratten, also known as "L.B. ", is the younger sister of the murdered actress Dorothy Stratten, who was dating director Peter Bogdanovich at the time of her death. Stratten was born in Vancouver, British Columbia, Canada. On December 30, 1988, the 49-year-old Bogdanovich married 20-year-old Louise after dating her for a few years after Dorothy's death. (Louise was 12 years old when Dorothy died.