On this site you can find a lot of information about the Dutch town Leiden. The emphasis is on the baptisms before 1812. But some family trees grow because of the additions of others.
When you are searching for a name, consider that the K and C are often used for each other, the same goes for the S and Z.
To search the site you can look here (for the whole site) or here (for everyting and only in Leiden)
You can reach me by email. (beheerder @ mijnstambomen.nl)