Was Jeremiah Referring to Psalms?

[OsoWeakbutHeIsStrong]

Reading in Lamentations today, I saw this verse:

The breath of our nostrils, the anointed of the LORD, was taken in their pits, of whom we said, Under his shadow we shall live among the heathen.
Lamentations 4:20

It just made me wonder if Jeremiah was referring to Psalm 91 when he was reflecting, "...of whom we said"

Here's the verse in Psalm 91 that made me think that:

He that dwelleth in the secret place of the most High shall abide under the shadow of the Almighty.
Psalm 91:1

If he's not referring to Psalm 91, does anyone have more of an understanding of this passage (Lam 4:20)?

If Jeremiah is referring to Psalm 91, it's really cool to see how the Bible unfolds and it just makes it more alive to me.  It paints a broader picture when I see instances like Jesus talking about Jonah, Paul quoting from the OT, Jesus pointing back to Isaiah (pointing out prophesy of Himself) and Jeremiah possibly referring to Psalm 91. 

[OsoWeakbutHeIsStrong]

This morning I just saw another Psalm that Jeremiah could be referring to! 

Psalm 36

How excellent is thy lovingkindness, O God! therefore the children of men put their trust under the shadow of thy wings.
Psalm 36:7