Hi, Paul. Did Owen have a brother Francis?
Francis b. 2/12/1808 immigrated to USA in 1831 and he
married Catherine Nolan in 1830. I believe Francis was born in Fernanagh Co., Ire..
You also mentioned a Honora O'Rourke(if you search on
o'rourke and Herkimer, NY) you will find a Honora, Sarah, and Bridget. Bridget O'Rourke maybe my grandmother. I don't have the direct connection, yet. However O'Roukes were in NY before migrating to Ill.. The O'Rourkes and Clarkes both ended up in McHenry Co., Illinois.

I thought I would respond because we have a lot of
same family names.
Please email me at 'dorourke@uiuc.edu'.
Thank you, Dan.