Jace
You don't have any relatives. Your father lives in Idris and your mother died when you were younger.
Alec
You are Magnus's distant cousin. All warlocks are related somehow.
Simon
You are the second youngest Lightwood sibling. Alec and Izzy are your older siblings and Max is your younger brother. Jace is also your adopted older brother.
Magnus
You are Clary's sista from a different mista :)
Raphael
You have an older brother named James.