I was sort of afraid it wouldn't be useful...
I've taken it as a challenge to look at it, though. Point 1 is actually incredibly easy, as I was wrong about the language...
1.1: Select the creature with 'v'
1.2: Go to the DFHack window and type gui/gm-editor.
1.3: Hit <ENTER> when the cursor is on "name" (which it should be by default).
1.4: Hit <ENTER> again on "first_name" (again the default).
1.5: Change the text to "goden" (for some reason DF seems to introduce an initial capital letter by itself on the critters I've looked at).
1.6: Hit <ESC> a number of times to back out.
Edit:
2. is rather straightforward as well:
2.1: gui/gm-editor on 'v' selected creature (as above)
2.2: Down arrow until "status" is selected, and <ENTER>
2.3: Down arrow until "current_soul" is selected and <ENTER>
2.4: Down arrow until "skills" is selected and <ENTER>
2.5: You're now in an array of the skills. Go down into each of them with <ENTER>, edit, and back out with <ESC>
2.5.1: The first one is CARPENTRY. Down arrow to "rating" and change it to the desired one (go down the list presented and hit <ENTER>), back out, and change "experience" to match.
Skill levels:
Dabbling: 500
Novice: 600
Adequate: 700
Competent: 800
Skilled: 900
Proficient: 1000
Talented: 1100
Adept: 1200
Expert: 1300
Professional: 1400
Accomplished: 1500
Great: 1600
Master: 1700
HighMaster: 1800
GrandMaster: 1900
Legendary: 2000
Legendary1: 2100
Legendary2: 2200
Legendary3: 2300
Legendary4: 2400
Legendary5: Above.
Presumably these levels are the top of the corresponding proficiency.
2.6: <ESC> out when finished tweaking.
Note that I haven't actually tried the above. I've looked with gui/gm-editor when typing this, though. Anyway, make a backup before hacking, just in case.