Complex sentence: Bernadotte went to the European Court of Human Rights in an effort to have the Government of Sweden acknowledge his princely title there, but in 2004, after his death, the ECHR declared the application inadmissible.
Split into simpler sentences: Bernadotte went to the European Court of Human Rights in an effort to reclaim his princely title. In 2004, after his death, the ECHR declared the application inadmissible.