Act 2, Sc. 2, lines 384-415: Who is Polonius talking about?

Hamlet. O, Jephthah, judge of Israel, what a treasure hadst thou!

Polonius. What a treasure had he, my lord?

Hamlet. Why,

One fair daughter and no more,

The which he loved passing well.

Polonius. [aisde] Still on my daughter.

Hamlet. Am I not i'th'right, old Jephthah?

Polonius. If you call me Jephthah, my lord, I have a daughter that I love passing well.