שמואל א כה:ב פירוש: רש״י

There was a man in Ma'on. The name of the city.¹Not to be mistook for מָעוֹן meaning a dwelling, as in Tehillim 26:8, but rather, it is the city mentioned in Yehoshua 15:55, and it was located in Yehudah’s territory, the tribe of which Novol was a member.

Whose business. His cattle and possessions.

Wealthy. [Literally 'very great'], meaning wealthy.