At work, so I can't write up a full character sheet, but I can point out key bits of Jack.
Attributes: High stats all around (being a singular protagonist, Jack can't really afford to have major deficiencies). Very roughly, maybe ST 12, DX 16+, IQ 12, HT 14+. Jack's strong but that's not his forte and he's clever but not a super-genius, so I think 12s are appropriate. Jack is very very speedy and precise, though, so I think DX reaching to superhuman levels would work. Similarly, Jack's tough as shit, so super high HT also works. Assuming DX 16/HT 14, Jack would have a Basic Speed 7.5 and Move of 7; I would round BS up to 8 and maybe add a few more levels to speed so Jack can get that sweet, sweet 2-yard Step.
Skills: You could either list out the ton of skills Jack has (dude's nearly omniproficient in anything not technological), or you can save time and sanity and just pick up decent level of a handful of Wildcard Skills. Bow!, Explorer!, Fist!, Horseman!, Katana!, Move!, and a handful of normal skills to handle miscellaneous things Jack can do like being a sailor.
Advantages: Either Signature Gear or a gadget'd advantage to represent his magical sword, depending on if you want to build it as a sword with enchantment spells or a unique advantage. A couple levels of Super Jump. A few levels of Striking ST too. With the Weapon Master advantage, you can use Katana for cinematic skills like Power Blow (double or triple strength for one attack), Breaking Blow (#shrek any inanimate object), etc.
Disadvantages: Hoo boy. Enemy (Constant, Very Powerful) is a must. Bunch of levels of Low TL, low Wealth, Social Stigma (Ignorant), and similar traits to represent a man out of his own time. Not disadvantages per se, but Jack would suffer for not having Cultural Familiarity and would have the language at Accented. Jack's also a Hero, though, so Pacifism (No Innocents AND possibly Reluctant Killer), Selfless, Honesty, Sense of Duty, Code of Honor, etc.