We report the discovery of two , new , rare , wide , double-degenerate binaries that each contain a magnetic and a non-magnetic star . The components of SDSS J092646.88+132134.5 + J092647.00+132138.4 and SDSS J150746.48+521002.1 + J150746.80+520958.0 have angular separations of only 4.6 arcsec ( a \sim 650AU ) and 5.1 arcsec ( a \sim 750AU ) , respectively . They also appear to share common proper motions . Follow-up optical spectroscopy reveals each system to consist of a DA and a H-rich high-field magnetic white dwarf ( HFMWD ) . Our measurements of the effective temperatures and the surface gravities of the DA components reveal both to have larger masses than are typical of field white dwarfs . By assuming that these degenerates have evolved essentially as single stars , due to their wide orbital separations , we use them to place limits on the total ages of our stellar systems . These argue that in each case the HFMWD is probably associated with an early type progenitor ( M _ { init } > 2M _ { \odot } ) . We find that the cooling time of SDSS J150746.80+520958.0 ( DAH ) is somewhat lower than might be expected had it followed the evolutionary path of a typical single star . This mild discord is in the same sense as that observed for two of the small number of other HFMWDs for which progenitor mass estimates have been made , RE J0317-853 and EG 59 . The mass of the other DAH , SDSS J092646.88+132134.5 , appears to be smaller than expected on the basis of single star evolution . If this object was/is a member of a hierarchical triple system it may have experienced greater mass loss during an earlier phase of its life as a result of it having a close companion . The large uncertainties on our estimates of the parameters of the HFMWDs suggest a larger sample of these objects is required to firmly identify any trends in their inferred cooling times and progenitor masses . This should shed further light on their formation and the impact magnetic fields have on the late stages of stellar evolution . To serve as a starting point , we highlight two further candidate young , wide magnetic + non-magnetic double-degenerate systems within SDSS , CBS 229 and SDSS J074853.07+302543.5 + J074852.95+302543.4 , which should be subjected to detailed ( resolved ) spectroscopic followed-up studies .