I just got a chance to open up a 1.0.0 save, and here are the locations for the villagers who settle into the first three houses you build at Nook's request (so villagers 3, 4, and 5 that arrive to your island) -- at this point in my game they are merely "SOLD" signs on the houses, with their names underneath. So if you want to change those villagers
before they officially move in, you can do so here:
View attachment 200990
Villager hex pairs are by SPECIES, VILLAGER ID -- so Tutu for instance has species bea07 and would therefore be "01 07" -- 01 to define she's a bear, 07 to tell the game it's the 7th bear (Tutu). E0 09 would be Sherb, 20 11 would be Marshal, and 12 10 would be Reneigh.
A NOTE ABOUT VILLAGER CODES:
In the cases of Villager IDs that go over 09 (for instance, Marshal is squ17 or Squirrel #17), you MUST manually convert them.
EXAMPLE:
Marshal is 20 11, NOT 20 17!
20 = Species ID (Squirrel)
11 = Squirrel #17, because hex counts up as 09, 0A, 0B -- not 09, 10, 11 -- so the 17 MUST be converted to hex, making the 17 actually an 11 -- because you would count it 00, 01, 02, 03, 04, 05, 06, 07, 08, 09, 0A, 0B, 0C, 0D, 0E, 0F, 10, 11 (<-- making this the "17th" number), and so on.
Same for Reneigh -- hrs16 -- 12 16 --> becomes 12 10 after conversion.
ADDITIONAL OFFSETS (Villager locations after they have moved in)
First Villager Offset Start
00000110 - 00000111
Second Villager Offset Start
00012BC0 - 00012BC1
Third Villager Offset Start
00025670 - 00025671