The components of a genogram includes
Three or more generations.
The names of all family members.
Age or year of birth of all family members.
Any deaths, including age at or date of death and cause.
Significant diseases or problems of family members.
Indication of members living together in the same household.
Dates of marriage & divorce.
A listing of first born of each family to the left , with sibling listed sequentially to the right.
Symbols selected for simplicity & maximum visibility