Help searching family tree for Royal blood?

Question

There is a myth in my family that my great, great, great, great, great grandfather [on my mother's side] married a Danish princess.

How can I research this online to find if it is true or not?

Answer 1

searching online wont get you that far...talk to your family...try to locate a family member you have never met or that lives far away ask them questions...then look up on the computer if you have royal blood