Welcome to Ireland Reaching Out - I hope someone researching the family name will be in touch with you.
In the meantime have you had a look at the Clare Local Studies Library- it is a great resource for anyone with ancestors from Clare:
It may not be possible to ascertain if the above family knew each other before meeting and marrying but generally people would have remained in their home parishes and this was where they went to school and mass and socialised. Usually the trip to the US or Australia or the UK was one of the only times they actually left the parish or indeed the county.
Let us know if you manage to make a connection!
All the best