Grok pattern for Names

Elastic Stack Logstash
1

Hi,

Can someone suggest grok pattern for the following names

 Mr. Rakesh Kumar Reddy
 Mr Harish Shankar
 Mr M. D. S. Reddy
 Mr. M D S Reddy
 Mr M.D.S. Reddy

These are the names that are present in Name field.
Here, I want to extract the names based on space and need to remove the single letter words.
for this I have used the grok pattern

(?<Courtesy>[\w\.]+) (%{NOTSPACE:FName})? (%{NOTSPACE:MName})? (%{NOTSPACE:LName})?

This is working fine for the names like

 Mr. Rakesh Kumar Reddy
 Mr Harish Shankar

For the above pattern I'm getting this result

Name : Mr. Rakesh Kumar Reddy
Courtesy : Mr
FName : Rakesh
MName : Kumar
LName : Reddy

But For the names like

Mr M. D. S. Reddy
Mr. M D S Reddy
Mr M.D.S. Reddy

I need the output like

Courtesy : Mr
FName : Reddy

which means all the single letter words should not be considered.
Can anyone suggest me a grok pattern for this?

2

If you make your own grok using this regex, it should work:

[\w]{2,}

I would definitely test that out a bit someplace like regexr.com, but I believe that will match on all groups of letters that are 2 characters long, or longer.