For this Fokko Jan there are 2 different names on Yasni.
In the ranking of the most common first names Fokko Jan is on position 4589.
Male first name (Frisian): Fokko, Old High (two-part name); folc = the crowd, the military band, the people, heri = the army, the soldier of old German two-part name, known by the Knights Volker from the Nibelungenlied
Male first name (German, Scandinavian, Dutch, Polish, Czech): Jan, Yahweh is gracious, the Lord is good; Hebrew (New Testament): Yahweh = (Name of God); Chanan = favor, be gracious, name of St. John the Evangelist , also known by John the Baptist, at the end of the Middle Ages, the most common Christian name in Germany, so far contributed 23 popes named John
