Attributing a Child to other than his Actual Father

<QUESTION>

I married a divorced woman with 2 children. Recently the children have asked why their last (family) name is not the same as mine or their mother (she has adopted my last name). They currently retain their biological father's name. Is it permissible if they wish, to change their names from their biological father's name to their adopted father's name?

<ANSWER>

In the name of Allah, Most Compassionate, Most Merciful,

In Islam, lineage (nasab) has b......click on the link to read the rest