The "John Grenham Irish Ancestors" Facebook group includes postings about different parts of his website that may be overlooked. 

Under the free Browse tab, select Emigration to find links to passenger  lists sortable by name of ship, year, origin, and destination. While the list for early years is sparse, entries start in 1767 and extend through 1930. Click on the image at right to start your search.

Thanks to a loyal IGSI member and blog reader for sharing this tip!