suecoombs115,
You can contact – in English - the authorities of the city of Ostend to get a copy of his death certificate (complete date if possible).
For 1929 there could be a problem of privacy; so explane that you are a descendant.
Letters to: Burgerzaken, Vindictivelaan 1, 8400 Oostende, BELGIUM.
Or: Fax +3259502538, for the attention of Burgerzaken.
Or:
burgerzaken@oostende.be Fons Cuppens, Belgium.