If, for example, one of the parents dies and the child does not share the surviving parent's last name, that parent loses all parental rights to the child as they are not legally registered as parent and child. 
Kama, kwa mfano mmoja wa wazazi akifariki na mtoto hana jina la ubini wa mzazi aliyesalia, mzazi huyo hupoteza haki zote za malezi kwa mtoto kwa sababu hawajasajiliwa kisheria kama mzazi na mwanae.