Today, September 16, Saint Ninian is celebrated for bringing Christianity to the tribes.
From the BBC source
<div class="ubbcode-block"><div class="ubbcode-header">Quote:</div><div class="ubbcode-body">The earliest known Scottish saint is St Ninian [who] was concerned with the implementation of Christianity north of Hadrian's Wall at a time when most of th<span style="font-weight: bold">e Caledonian Tribes were still pagan</span>.
</div></div>
From the BBC source
<div class="ubbcode-block"><div class="ubbcode-header">Quote:</div><div class="ubbcode-body">The earliest known Scottish saint is St Ninian [who] was concerned with the implementation of Christianity north of Hadrian's Wall at a time when most of th<span style="font-weight: bold">e Caledonian Tribes were still pagan</span>.
</div></div>