Kernrechtsfrage
Whether the civil status register entry of the applicants' surname had to be corrected under Art. 42 ZGB.
Extrahierter Entscheid
No correction was warranted because the applicants failed to show an error or mistake in the register; the surname spelling X________ had been consistently carried into the federal civil status registers.
Extrahierte Begründung
For a correction under Art. 42 ZGB, a register error or mistake must be proven. The decisive spelling is the one recognized when the federal registers were introduced; earlier or foreign spellings are not controlling. The applicants' line had been entered and continuously recorded as X________, so no erroneous entry was established.