Okay, we all know what 0x0202BC18 is the start of the tactician name, but here are some more goodies:
0x202BBF8 - what ASM routines load to lead tactician data... start of the tactician struct?
0x202BC0D - Weather condition (Same as in EA definitions; 00 = clear, 01 = snow, etc)
0x202BC23 - Appears to be birth month? Byte is X1, where X is 0 for January, 1 for Feb. etc.
0x202BC24 - Gender; 00 for Male, 01 for Female. I think this is used to store more information down the line, but the LO bit is gender.
I think the LO byte of the birth month indicates whether you inputted tactician data(when starting directly in Eliwood mode) or not. (It's 00 when you choose to not create a new tactician). A consequence of this is that you need to create a tactician in order to get the tactician stars bonus.
0x0202BC13 - Mode(i.e. 0x1 for Lyn, 0x2 for Eliwood, 0x3 for Hector). Probably known, but sticking it here anyway.
And here's a bonus that I gleaned from just playing through the Prologue: 202BC08 -- Apparently the counter for which tutorial is to be displayed next?
Bonus2: 0202BC44 seems to be counting up whenever you're waiting on a battle window. Is it a play time counter and/or a random number seed?
Edit -- AND! It changes back to whatever it was when I change it in the memory editor. What is this witchcraft!?