"Danger" is my middle name: Origin

Factual Questions
1

This is such a cliche, but does anyone know where it originated?

2

I got as far back as 1966, in an episode of The Monkees

3

There’s really two questions:

First, when did people start saying “X is my middle name” as a colorful way of making a statement about X?

Second, when did people start using the word “danger” in that expression?

I took a quick look at the google news archives and found

this reference from 1909:

Probably if you poke around you can find older ones.

4

The first person to say that was a man named Ernest Danger Gordon.

5

Cool. I asked the same question a couple of years ago, and the earliest we found was from The Trumpet of the Swan by E. B. White (1970).