Saint Catherine of Alexandria on the left is identifiable by her attribute of the wheel on which she was tortured, while Saint Catherine of Siena is on the right holding a lily, a symbol of purity.
<bdi><a href="https://en.wikipedia.org/wiki/en:Ambrogio_Bergognone" class="extiw" title="w:en:Ambrogio Bergognone"><span title="Italian Renaissance painter">Ambrogio Bergognone</span></a>
</bdi>
circa 1490 <div style="display: none;">date QS:P571,+1490-00-00T00:00:00Z/9,P1480,Q5727902</div>
Ambrogio Bergognone