That's being exact. I guess that would be the official way to put it.
I mean, if you wanted to be super-specific, you'd go back to when Bri and Rog first got together, since they founded Queen. But then remember, Queen is all four of the guys.
It's weird for a lot of bands, though. Rush didn't have Neil Peart (their drummer) until after their first album in 1974, but the band had used the name Rush since around '68-'69.
I don't know anymore, too much number work :/
We can only grow the way the wind blows
On a bare and weathered shore
We can only bow to the here and now
In our elemental war
- Rush, "The Way The Wind Blows"