Splitting a string from a cell but different types of strings

Hi

I have a several thousand rows with contact names, but none of them follow the same pattern and I need them splitting out into different columns. for example, i have rows like this

Mr firstname surname

initial surname

initial

firstname surname

firstname

firstname middlename surname

its a nightmare! I need these splitting out into columns: Suffix, Firstname, Middlename, Surname.

any ideas how I can encompass this in one formula to accommodate those missing suffixes, those with just an initial etc?

Many thanks

Steve