No, 'Leschan' isn't a normal name. Some googling told me that it's a very unusual surname - possibly a mispelling of a French name - but it definitely isn't a given name that anyone would recognise. People can call themselves and their children whatever they want, but it would be strange to choose such an usual word for a name. What does it mean? Nothing at all. But remember that Western names don't need to have meanings. And even if they do have meanings, nobody cares about the meaning. Unlike in China, we don't choose names to be meaningful. How is it pronounced? Probably 'le-shan'. What about 'Leshan'? No, that's not a name either. Les chan? If it were two words, it would have to be a capitalised as Les Chan. That sounds like a anglicised version of a Chinese name. 'Les' is the abbreviation for the given name Leslie or Lesley, and 'Chan' is the anglicised spelling of a common Chinese family name. A Chinese Australian, for example, might call himself 'Les Chan': 'Les' as his first name and 'Chan; as his surname.