What information does family tree should contain ?

What information does family tree should contain ?

Often people assume family tree is nothing but names of family members and relations. Genealogists say it is more than that, family tree can contain

• Places they lived
• Diary of major events
• Blood groups
• Medical history
• Profession
• Maternal last names/members
• Language spoken

It could much more based on what you want to share with future generations. Especially medical history could help doctors/researchers to make right decisions.