No, it was homemade and didn't actually have a name as such, just "our Fortran dialect". The pre-proc was written in CDC Compass.I used to actually indent Fortran IV source code. It doesn't violate the rules, makes things easier to read. Makes the code narrower, since you only have from column 8 to 72. But back then, we had fewer variables, therefore shorter variable names.
Was it Mortran? That was a genius language. Terrible hack, hard to debug (because the generated Fortran code was ugly it times), but pleasant to code in. Sort of Fortran IV with modern structured tooling, like good loops.