Sure you can use a head from brand A with a cab from brand B.
HOWEVER
You need to ensure that the impedance match.

In other words, if your amp head is expecting an 8ohm load, make sure the cab is wired for 8ohms. There are ways to rewire a cab (must have multiple speakers) so that it can be either 4 / 8 / 16 ohms.

There are lots of great sites out there that can explain this way better than I ever could. Just do a search on guitar cab wiring.