Commuter rail ticket
 

Has anyone any idea can you purchases a monthly commuter ticket from Mullingar to Leixlip lousias bridge or do you have to purchase a ticket into Connolly ;)

Monthly tickets are available between any pair of named stations countrywide

Well last month it was €221.00
Mullingar Connolly is €235.00

So unless you need to visit the city centre there is no point

Can you board/disembark at Louisa Bridge with a Connolly-Mullingar ticket?

Yes

...except a pair of stations within the short hop zone.

Well 3 and 7 day options are available

In fact the monthly does exist however the zonal option is less

Three day ticket
 

i have looked this up and there is no provision for Mullingar on it. There is only tickers for the short hop zones. Is there another place they can be purchased

Three day and seven day tickets are within the short hop zone only. Outside it is weekly (Sunday-Saturday), monthly (calendar months), and annual only.