S2000 is correct! Calvin Coolidge it is.

He was sworn in as president of the us by his own father
who was a notary public and justice of the peace.

You're up S2.

I should have one in the morning.

It's late and I'm going to bed.

Promises, promises ...

1. According to the Julian calendar, I was born on Christmas day, but the Gregorian calendar puts it as January 4.

2. Prematurely.

3. Oh . . . in Lincolnshire.

(Note to Arthur: on the Gregorian calendar it's about 5:15 in the evening here, but the Julian calendar suggests that it's about 8:30 in the morning. At least, that's my story and I'm sticking to it.)

Haha! You've got me there, Bill!

Mick Jagger ... (with such limited information, it could be anybody).

Not Mr. Jagger.

4. I made a list of the sins I had committed up through the age of 19, including threatening my mother and stepfather to "burn them and the house over them". I wasn't fond of my stepfather.

Is it the Brithih serial killer who lived at 10 Rillington Place?

I'm not sure who that is, but this isn't he/she.

5. I was educated at The King's School, Grantham, until I was 17. My mother, widowed a second time, removed me from school and attempted to make me a farmer. I wasn't fond of farming.

Ben Franklin?

Not Franklin (who was born in Boston).

6. The schoolmaster at King's persuaded my mother to let me return to school. Motivated partly by a desire for revenge against a schoolyard bully, I became the top-ranked student, distinguishing myself mainly by building sundials and models of windmills.

Sounds like Sir Isaac Newton

Cliff got it!

1. I was born in 1942
2. I come from the San Francisco area of California
3. From a young age, music was important in my family and I was given piano lessons.

Eventually, I'd hoped to get into the inevitable discussion about whether Newton or Leibniz should get credit for inventing (discovering?) calculus. They feuded over it.

This brings to mind an interesting personal story concerning Leibniz. When I was a university undergraduate I was required to take a philosophy class. Having no interest in taking a philosophy class, I chose Logic: a class I figured that, as a mathematics major, I could pass without breathing hard. The first chapter of our textbook covered philosophers who made significant contributions to the field of logic. Amongst those listed was Gottfried Leibniz.

On our first midterm exam, one of the questions was to name two philosophers who contributed to the development of logic, and describe for what they were best known. One of the philosophers I listed was Leibniz, and I said that he was best known for inventing calculus. The professor marked the second half of my answer wrong, and I protested. He said that I should have mentioned Leibniz best known contribution to the field of logic. I told him that if that's what he had wanted, then that's what the question should have said. I contended that if he were to walk down to the quad, grab ten students at random, and ask them for what Leibniz was best known, if any of them had even heard of Leibniz it would have been for inventing calculus.

He didn't award me the points.

Several years later, he was convicted of murdering the boyfriend of one of his students, outside of whose dorm room he had hidden while the boyfriend was visiting her. It just goes to show you what can happen when you don't award me the points I've rightfully earned.

Good point, Bill! I can see the logic in that.

Cliff, I'm guessing Jerry Garcia?

Gee Arthur, that didn't take long. Back to you.

Cliff, when I did Grace Slick a few turns ago, I also looked into the other 1960s psychedelic bands. So when your new clues mentioned San Francisco and music, Jerry Garcia instantly came to mind.

Here’s a new mystery personality:

I was born in Massachusetts in 1922. Research has shown that my roots were in Brittany, and I was descended from a middle-class merchant colonist whose sons married French Canadians.

My own father had been born into a family of potato farmers in Quebec.

I spoke French with my family and began learning English at school, around age six. I was a serious child and devoted to my mother, who was a devout Catholic.

After my brother died from rheumatic fever at age 9, my mother sought solace in her faith, while my father abandoned it, wallowing in drinking, gambling, and smoking.

When I was six years old, I had my first Confession. For penance, I was told to say a rosary, during which I heard God tell me that despite having to suffer, in the end I would receive salvation.