Hello Ed
If you google either Patrick Roche Farrill or his father Dominick Farrill , you will get many hits that show Patrick was from Montserrat, West Indies and was from an Irish family that went there in the 1600's.
One hit on AncestryDNA a posting by Patricia ( From Sydney - same as me) who could be the same as the one who posted on this site in 2006 , who names two of Patrick's sisters as Lelia (Lilly) and Louisa, which explains two of Patrick's daughters.
If you also google "Wordpress Farellhistory Richard Farrell 1 " you will find a huge amount of family history, some of which you might prefer not to know about.
Cheers
David Dwyer