[bee_rider]

Hopefully nobody wrote down the true source of his nickname so I can plausibly continue believing…

[NeoTar]

Another fun idea which has been proposed is that it’s an ironic nickname - so rather than ‘Baldy’ (which is you see busts of Caesar is certainly plausible) people called him or his ancestors ‘hairy’.

[saalweachter]

Are you familiar with the Three Stooges?