I know Prophet Samuel is indirectly mentioned in the Quran. Does that mean it is a suitable name?
Answer
Prophet Samuel peace be upon him is mentioned in verse 2:246 of the Quran and the verses that follow it. The name Samuel means "God has heard" according to the Bible. Since the name belongs to a good person and has a good meaning, it is not forbidden to use it in Islam.
Some scholars however do not recommend using names coming from Jewish and Christian sources. For example Prophet Yusuf's brother is mentioned in the Quran, but his name is not (Benjamin), and for this reason Muslims don't normally use the name Benjamin since it is associated with Jewish and Christian culture.
But every age of history has different concerns and considerations. Since the name is not forbidden in Islam, the decision to use it ultimately returns to you.