Since it is a formal name, any spelling would be correct, and many variations will be seen.
The last name "Hennessy" is spelled as such.
Schwarzenegger
The last name is most commonly spelled "Thompson", but some people may spell it "Thomson."
Barbra
The correct spelling is Arnold Schwarzenegger. He is also the governer of California state.
How you wrote it =)
His name is spelt correctly in the question.
You can politely ask the person how to pronounce their last name, or ask them to spell it out for you phonetically. It's important to show that you're making an effort to correctly pronounce their name.
It is correctly spelt as Dytlief.
no - and learn to spell her name correctly
You have spelled the name 'Diona' correctly. It is a personal name and a town in Illinois.
You spelled Trent correctly.