Hello Geoff
The answer is a most definite YES.
Clyde Engineering started lawnmower production in about 1932,
and should be considered an important earlier maker.

The rotary is particularly desirable because it was arguably
our first AUS made rear catcher lawnmower.
I think that one is a Clyde Major with 147cc engine.
That would make it hte first I've seen.
Typically, the catcher is missing.

https://www.outdoorking-forum.com.au/forum/ubbthreads.php?ubb=showflat&Number=70112

The Clyde De-Luxe is far under-appreciated.
This was Clyde's new design post WWII.
Note how the badge mimics the famous shape of their loco plates.
Here is a nice ad that mentions their loco making fame.

[Linked Image]

Clyde Sales also imported lawnmowers, and were Thomas Green's agents
for many years. They were also agents for Mountfield sickle bar mowers.