The problem with your query is that only a maximum edit distance of 2 is allowed.
In the case above what you probably want to do is have a synonym for St. to Saint, and that would match for you. Of course, this would depend on your data as St could also be "street".
If you want to just test the fuzzy searching, you could try this example
curl -XGET "http://localhost:9200/_search " -d'
{
"query": {
"fuzzy": {
"name" : {
"value" : "Louiee",
"fuzziness" : 2
}
}
}
}