Except for lower-order special cases, to this author's knowledge no straightforward RLC realisation procedure has been found for any subclasses of higher-order impedance functions with real poles and zeros, not expressible in the above mentioned RC x RL manner. In the following, we will first show that any impedance function resulting from the multiplication of an RC and an RL function is RLC realisable using lst-order building blocks only. We then use this conclusion to determine a subclass of non-RC x RL functions which need only canonical 1st-order and 2nd-order subnetworks for its RL C realisation.