A winged lion can refer to the symbol of Mark The Evangelist (traditional author of the Gospel of Mark).
It could also be relevant to the protective deity iconographed in art as lammasu or the lesser known shedu as the seraphic winged being from Babylonian legend. The lamassu and shedu were domestic spirits of protection to Babylonian bourgeois. To safeguard houses, the lamassu were engraved in clay tablets, which were then buried under the door’s threshold. Over the period, they advanced in hierarchy from protecting mere commoners to those of royalty. They were placed as watchdog pairs at the entrance of palaces and cities, carved in behemothic size.