I am half German (both grandmothers were first generation born in the US from great grandparents from Bavaria who fled Bismark's Kulturkampf). My maternal grandfather is full Irish. My paternal grandfather was some Irish and English with a tiny bit of Welsh.
So I am half German, a little over a quarter Irish, a little English and a speck of Welsh I guess which is ironic since my last name (Coomes) comes from Wales. From what I have read, my family left Wales to fight with William the Conquerer against the Angles and the Saxons in 1066 and stayed in England after the victory. The family intermarried with the English for the next 650 years or so. Headed to the Maryland to escape Oliver Cromwell in the mid 1600's and came to Bardstown, Kentucky in the mid 1700's living with some English descendants but mostly Irish Descendants. Now I am about 40 miles north of Bardstown, KY in Louisville, KY and don't plan on going anywhere.
Like the saying goes; "My "ARSE" is staying in the Bluegrass". I think you can figure out what word I substituted ARSE with.