Some narrations state that it is recommended to name children after the names of the prophets and the names that refer to the servitude of the Lord, like "Abdullah". Also, we find emphasis in some reports on certain names like Muhammad, Ali, Hasan, Hussein, Ja'far, Talib and Hamza, and amongst the female names, Fatima.
You should assume it is the fourth rak'a. And after finishing the prayer with Tasleem, you should perform a prayer of one rak'a - as the prayer of precaution - in which only Surah al-Fatiha is recited, and then you bow down, prostrate twice, and end with Tashahhud and Tasleem. Alternatively, you can perform this prayer as explained in two rak'as while in the sitting position.