<BLOCKQUOTE><table width="85%"><tr><td class="txt4"><img src="/Themes/default/images/icon-quote.gif">&nbsp;<strong>Ashley Nicole wrote:</strong></td></tr><tr><td class="quoteTable"><table width="100%"><tr><td width="100%" valign="top" class="txt4"><P>I am having a problem paraphrasing Line 25 "My favour at her breast" and lines 49 through 51 "The count your master's known munificence, Is ample warrant that no just pretense, Of mine for dowry will be disallowed;" </P>
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for "My favour at her Breast", could it be the narrator talking about their sexual relationship? Or, more likely, him being closest to her heart - her favourite person, in other words. It would tie into the theme of the poem - That of Jealousy and bitterness of the duchess treating everyone with as much compassion as she showed the narrator, and the consequences of this (her death).

For the next quote, a dictionary will be helpful.

Mu·nif·i·cence
n.

[L. munificentia: cf. F. munificence.]
The quality or state of being munificent; a giving or bestowing with extraordinary liberality; generous bounty; lavish generosity.

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Now, it's kind of hard explaining this quote as an isolated peice of evidence, so i looked up the poem, and found that this quote comes when the narrator is addressing the "Count", and not regarding the painting any more. Furthermore, following this, there is talk of a marriage proposal - "dowry".
This leads to the suggestion that the narrator is getting re-married, and is trying to get into favour with the Count (the potential bride's father) - hence complementing him, by calling him munificent.

Hope that helps!