Bulk ceramic samples of (PbZr0.53Ti0.47O3)x-(PbFe0.67W0.33O3)1-x (PZT-PFW) have been prepared via solid-state synthesis. They all show weak ferromagnetic behaviour (WFM) at room-temperature (RT) with particular high magnetizations for x = 0.6. In this system, this behaviour had only been known for thin-films where strong magnetoelectric coupling had been reported. For ceramics, this behaviour could not be confirmed by other groups and the structure was found to be different.However, our results for magnetic behaviour and structure are similar to those reported for thin-films. This fact makes this system very interesting and a promising candidate for a RT multiferroic with strong magnetoelectric coupling.Furthermore, perovskite RT multiferroics often exhibit AFM ordering and the WFM is often attributed to a canting of the AFM spins which results in a net magnetization. However, theoretical studies predict regions with ferrimagnetic ordering in the PZT-PFW and similar systems, which could explain those relatively high magnetizations. We hope that we can prove or falsify this important concept of the origin of magnetics in those systems with the proposed experiments.