Hi, after 4 years of painstaking research, I've just self-published a book on my MORRISSEY/MORRISEY family history and some of it is relevant to Morrissey's all over the world.
I too joined the Morrissey DNA Family Tree DNA Project which seems to confirm much of my research. The first 2 chapters discuss the two main theories of the origin of the Morrissey name - the ancient Gaelic theory and the more probable 12th Century deMarisco family. This is followed by introducing my GG Grandparents who were married in 1826 in Co. Kilkenny. The Kilkenny Archaeological Society assited me find Church baptism and marriage records indicating they were born in the 1790s and lived between Gowran and Thomastown up until the Great Famine when their children started emigrating to New South Wales. Another chapter is devoted to this period. The following chapters describe 170 years of my MORRISSEY family, mainly in Victoria, NSW and Queensland and how my ancestors changed the spelling of their surname twice. Once during WWI (Morricey) and secondly after WWI (Morrisey).
It's been formally reviewed at https://tintean.org.au/2021/10/10/the-detail-is-where-angels-lurk/ and is available at www.pjmpublication.com.au.
Regards
Patrick Joseph Morrisey PhD.
Sydney, Australia