Relatives

Relatives are


 * 1) Your partner(s) in a marriage.
 * 2) Your children (physical/accepted and/or adopted)
 * 3) Your parents (physical or by adoption, one can have at most 1 mother and at most 1 father)
 * 4) Your siblings (same mother and same father)
 * 5) Your half siblings (same mother or same father)
 * 6) Your indirect children := level 1: children of your children = grandchildren, or indirect children of your children, level of those + 1)
 * 7) Your indirect parents := those you are indirect child of (inheriting the level, e.g. level 1 = grandparents)
 * 8) Uncles and aunts := siblings of your parents (also half siblings)
 * 9) Nieces, nephews := those you are uncle or aunt of
 * 10) Cousins := children of uncles or aunts
 * 11) More and more distant relationships may also be defined, like grand-uncles, cou-cousins, etc.  But these are not relevant.