1) Open the console with the ` or ' or ~ key.
2) Type: show_cursorstat - to get your x,y co-ordinates
3) Type: move_character "[firstname lastname]" x,y - to move the character to the co-ords given to you above

On naming; when they're not as they appear, open the Data\text\names.txt to do a lookup on the internal name. For example many single-named Qarthdastim FMs have the lastname "ofcarthago".

Those with three names are "firstname secondnamethirdname". Romans are all "firstname Romanvs".