For this Gijs Diederik there are 2 different names on Yasni.
In the ranking of the most common first names Gijs Diederik is on position 4589.
Male first name (Dutch): Gijs, Old High (two-part name); gisal = the hostage, the guarantor, the pledge; beraht = bright, shiny, old German two-part name, known by the medieval practice, children as guarantors for alliances foreign courts to give
There is no meaning available yet for "Diederik".
Send in a meaning!