white, black, mulatto, there was a no col. for Creole. many mulatto, quadroon, octoroon had very light skin. and probably listed as mulatto.
if there was a mark it probably would indicate race other than white,
what are the names you are searching?
I don't know if it was left up to the census taker to mark the race,
a lot have no marks. blacks and whites lived next door to one another,
there was no boundary line I assume those on 1850-60 census were free people of color, that owned their property or rented property.
col 6 1850 and 1860 census
white, black, mulatto
1850 avoyelles 6 th col. on some say [m]
1850 st charles parish [m] [b] col 6
1850 terrebonne [m]
jefferson parish freetown [b], [m]
1860 census form col 6 white/black/mulatto