When you're ready, no rush.
Cloon is an odd one because there isn't a townland of that name in Roscommon, But there are well over 200 townlands in Roscommon starting with Cloon as part of their name. So probably local's shorten it to Cloon, but that must cause major confusion if there are a group of "Cloons" within a small area. Roll on the post codes, providing they DO NOT supersede the townland names as happened in Northern Ireland.
Thats very interesting, a US registered Rallye here in Ireland