then they usually have some sort of extra description attached to them to identify them [e.g. St. John the Baptist].

Normally, foreign names are Anglicized, including those of saints. (e.g., Sainte Jean = Saint Joan).

See the comprehensive list below

Renaissance period, due to the common Greco-Latin origins of the names. However, there is no sweeping rule except usage. The more modern ones are kept as is.

Sorry not to be able to help you with a bilingual site (you could try individual postings, this usually beings up some really interesting answers), but below you will find a more or less comprehensive list of names in English.

For this particularly saint I am positive : Sainte Helene is the right Translation. As a matter of fact, I am French and all french people learns (early : in grammar school - almost a topic) that Napoleon were tortured to death in the small island of sainte (fem.) helene (Atlantic Ocean - South west of African continent). At that time the island's English governor was Sir Hudson Lowe.
For the other saints please submit your list and I will decide without "préjugé" against the British.
( I am joking of course)
May thu keep in the path of paradise...

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Note added at 2001-12-27 23:45:06 (GMT)
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Do not forget that in french there are two genders : \"Saint\" is for the male saints.
\"Sainte\"is for the female saints.
Do not forget it if you dont\'want to shock the public...

Here are a few links I have found, which may help you with this dilemma:

http://www.catholic.org/saints/stsindex.html

http://www.dymphna.net/saints/names.html

http://emma.suffolk.lib.ny.us/kids/saints.htm

http://www.stgabriel.com/encyclo.html

I hope this helps!
Suzanne