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In page John of Bohemia:

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In 1945, the Luxembourg government took the chance to obtain possession of the bones. In a cloak and dagger operation,[citation needed] the remains were moved to the crypt of the Notre-Dame Cathedral, Luxembourg. The inscription on the tomb reads: "D.O.M. Hoc Sub Altari Servatur Ioannes, Rex Bohemiæ, Comes Luxemburgensis, Henrici vii Imperatoris Filius, Caroli iv Imperatoris Pater Wenceslai, Et Sigismundi Imperatorum Avus, Princeps Animo Maximus, obiit mcccxl 30 au."[1]