מלכים ב ד:א פירוש: רש״י, Metzudat David וFrom David to Destruction

A wife of one of the disciples of the prophets. She was the wife of Ovadyoh. Every expression of ‘בְּנֵי הַנְּבִיאִים’ [lit., “the sons of the prophets”], in Scripture, is translated [by Targum Yonoson] as, “the disciples of the prophets.”¹See Targum above 2:3, 2:7 and 2:15.

Our sages of blessed memory said that this "certain" woman was the wife of Ovadia and the collector of the loan was Yehoram son of Achav, for in his lifetime Achav had lent her money with interest in order to financially support the prophets.

Now the creditor. He was Yehorom, son of Achov, who would lend him with interest, enabling him to sustain the prophets in his father’s time [according to] Midrash Rabbi Tanchuma. Therefore it is stated, “And struck Yehorom between his arms,”²Below 9:24. which he stretched out to take interest.