What was the first FPS game with strafing?

What was the first FPS game that introduced strafing?

As far as I remember it was there in Duke Nukem 3D and Quake, which were my first encounter with PC games.

I did some research, and my guess will be:

Catacomb 3D, a first-person shooter with a dark fantasy setting released in November 1991:

I could try using the keymapper for W and S for cursor up and down, and A and D for the strafe modifier plus left and right cursor, so that they are strafe left and right.

Also from Reddit, another user kinda confirms to be Catacomb 3D.

Gun Buster, a arcade videogame released in August 1992:

Gun Buster control scheme consists of a joystick for movement and strafing and a light gun for aiming and turning.

Catacomb Abyss, a 1992 first person shooter:

It controls with the arrows, with left and right turning rather than strafing. Strafing requires you to hold alt, and fire is ctrl.