Despite of whatever his disability actually was, Byron was quite athletic and noted as a fantastic swimmer. Actually, it might be more accurate to say that he was physically fit in spite of his medical condition; as John Galt noted, Byron would exercise "violently" perhaps to compensate for his emasculating limp.
But what if Byron's strange limb and notable swimming prowess had a far more disturbing link? What if the same tainted blood that resulted in the dreadful "Innsmouth look" also flowed through Byron's veins? Byron's scandalous relationship with his half-sister August Leigh seems almost natural in light of the inbreeding practiced in that horrid Massachusetts port.
Byron's deformity wasn't a clubfoot...it was a flipper.
Lord Byron, the Deep One Romantic (Wild Card)
Attributes: Agility d8, Smarts d10, Spirit d10, Strength d8, Vigor d8
Skills: Boating d6, Climbing d6, Fighting d8, Knowledge (literature) d10, Notice d8, Persuasion d10, Stealth d8, Swimming d12, Taunt d10
Pace: 6; Parry: 6; Toughness: 6
• Aquatic: Pace 8
• Poetry: As an action, Byron can recite poetry that causes a mild hypnotic state in those exposed to it for more than a single round. Anyone who fails a Spirit roll upon hearing the crooning suffers a –2 to all rolls for the duration of the scene.
• Low Light Vision: Byron ignores any penalties for Dim and Dark lighting
Spells: Perhaps all that business about occult powers and summoning spirits in Manfred wasn't just poetic license; at the GM's discretion Byron might know d6 spells and have the appropriate casting skill at d8.
(Katie gets credit for inspiring this take on the "mad, bad, and dangerous to know" Byron.)