HOW SHOULD I YOUR TRUE LOVE KNOW is in the DT. Ophelia sings this in Hamlet.

From: Hamlet (Act IV, Scene 5), as a reference.

Re-enter HORATIO, with OPHELIA

OPHELIA
Where is the beauteous majesty of Denmark?

QUEEN GERTRUDE
How now, Ophelia!

OPHELIA
[Sings]

How should I your true love know
From another one?
By his cockle hat and staff,
And his sandal shoon.

QUEEN GERTRUDE

Alas, sweet lady, what imports this song?

OPHELIA
Say you? Nay, pray you, mark.
Sings

He is dead and gone, lady,
He is dead and gone;
At his head a grass-green turf,
At his heels a stone.

QUEEN GERTRUDE

Nay, but, Ophelia,--

OPHELIA
Pray you, mark.
Sings

White his shroud as the mountain snow,--

Enter KING CLAUDIUS

QUEEN GERTRUDE
Alas, look here, my lord.

OPHELIA
[Sings]

Larded with sweet flowers
Which bewept to the grave did go
With true-love showers.

KING CLAUDIUS
How do you, pretty lady?

OPHELIA
Well, God 'ild you! They say the owl was a baker's
daughter. Lord, we know what we are, but know not
what we may be. God be at your table !

~Masato