All information below is head canon, established for completeness of the character, and stored here for future reference and to help maintain character continuity. The only exception is that Aaron's point of origin was established in canon as Lodz, Poland.
As a note, all relations to actual historical events is meant in the utmost respect to actual victims of the Holocaust and their families. In an effort to best respect the history represented by this character, I've tried to keep the information as historically accurate as possible, taking into account that this is a fictional character.
General Information
Actual last name - Gryzinski
Wife's name - Hannah
Daughter's name - Natia
Place of Origin - Lodz, Poland
Timeline
1911, November - Aaron is born in Lodz
1912 - Hannah, Aaron's wife is born in Lodz
1931 - Hannah and Aaron married
1932 - Natia, Aaron's daughter is born in Lodz
1939, September - Poland is invaded by Germany; Lodz is captured
1940, February - Moved to what would later become the Lodz Ghetto in May of that year
1940, March - The family flees from Lodz before they are trapped; Hannah and Natia die from hypothermia after the family escape the soldiers; Aaron is discovered by Cross who makes him a vampire
1944 - Aaron immigrates to the United States
1945 - Aaron joins the vampire police force and begins his career
1999 - The vampire town of Serenity is founded by Friedrick Cross; Aaron is put in charge of the local police force
2000 - The vampire population is officially revealed to the human government
2001 - Events of the movie The Breed take place
2002 - Aaron is transported to The City (
capeandcowl continuity)