We can die by it, if not live by love,

Question

And if unfit for tomb or hearse
Our legend be, it will be fit for verse ;
And if no piece of chronicle we prove,
We'll build in sonnets pretty rooms ;
As well a well-wrought urn becomes
The greatest ashes, as half-acre tombs,
And by these hymns, all shall approve
Us canonized for love ;

where are there spondees and trochees

Answer 1

A spondee is two syllables, both of which are stressed.

Most of the poem you've included above is made up of iambs (unstressed, then stressed), but there are little variations in places. In this line, the last two syllables make up a spondee:
"And if no piece of chronicle we prove"

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A trochee is two syllables, the first is stressed and the second, unstressed.

The very first line in this poem seems to start out with a trochee:
"We can die by it, if not live by love"

I think...