The Fates

http://homepage.mac.com/cparada/GML/MOERAE.html
MOERAE

          The Goddess of Necessity, Themis, brought forth three lovely daughters, known as The Fates. All living things must eventually submit to these divine daughters of Zeus and Themis. Their names are: Clotho, Lachesis and Atropos.
       Life is woven by Clotho, measured by Lachesis and finally, in a very literal sense, the thread of life is cut by Atropos. They laugh at our feeble attempts to cheat them because they always prevail.

http://www.loggia.com/myth/fates.html
The Fates in Mythology
 
http://www.theoi.com/Khaos/Moirai.html
THE MOIRAI