I ask about percentage, because by such I have an equivalent percentage as if a grandparent was actually born there. The work out is as follows: 2 Great-Grandparents from Ireland=100% Irish grandmother=50% Irish parent=25% Irish me. Where as if 1 grandparent from Ireland=50% Irish parent=25% Irish me. Either way I work out to be the same percentage heritage.
I realise that in general that great-grandparents are considered to be too distant, however there is a major difference between 1 great grandparent ergo a 50% Irish grandparent and so on, and a 100% Irish grandparent...
Hellllllllllllllooooooooooooo Brendan
What’s with this adding up percentages ….. WHY would you add up percentages?
You have
2 parents 2/2 = 100%
4 grandparents 4/4 = 100%
8 great grandparents 8/8 = 100%
I think your Matherickings are a bit 'double dutch' to me
2 /8 greats were Irish = 1/4 OF THAT GENERATION were Irish = 25% of THAT GENERATION

Using your mathericking logickings and my fingers
4 grandparents = 12.5% Irish
2 parents generation = 6.25% Irish
I think you are 3.125 % Irish

What about the other 96.875%
Teddles