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Here are a few common symbols (there are many, many more):
Flying Angel: rebirth
Trumpeting Angel: call to Resurrection
Weeping Angel: grief
Coffin, Pick, Spade, Pall: mortality
Crown: glory of life after death
Flower: frailty of life
Severed Blossom: mortality
Garland: victory
Heart: love, love of God, abode of the soul
Hour Glass; inevitable passing of time(and life)
Winged Hour Glass: swift passage
Scull, Bones, Skeleton: mortality
Winged scull: flight of the soul from mortal man
Winged face: Effigy of soul of the deceased, soul in flight
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Of course the epitaphs inscribed on them is what first drew me to these little works of art. Here are some of my favorites:
The ever popular:
When I am dead and in my grave.
And all my bones are rotten,
Remember me when this you see,
Lest I shall be forgotten.
And:
What you are reading o'er my bones
I've often read on others tombs.
And others soon will read of thee
What you are reading now of me.
Then their are the ones that seem odd to us today:
Molly tho pleasant in her day
Was suddenly seiz'd and sent away
How soon shes ripe how soon shes rott'n
Sent to her grave & soon for gott'n
Which by todays sensitivities would probably read:
Molly, pleasant in her day,
Was suddenly seized and passed away.
How soon her mortal remains decay,
And her remembrance fades away.
Then there are the funny ones(which cannot be authenticated):
Here lies the body of our Anna
Done to death by a banana
It wasn't the fruit that laid her low
But the skin of the thing that made her go.
And from a tombstone out west:
Here lies Lester Moore,
Four slugs from a .44,
No Les, no more.