Derik
Derik meaning: Gifted ruler. From Theodoric.
Derik origin: English
Derik gender: Male

Diderik
Diderik meaning: Variant of Diederik: Ruler (of the people).
Diderik origin: Scandinavian
Diderik gender: Male

Diederik
Diederik meaning: Ruler of the people.
Diederik origin: Scandinavian
Diederik gender: Male