In some cases the confusion of color with class came about because some of the lighter-skinned blacks came from families of mixed heritage free before the Civil War, who had begun to accumulate education and property. In addition, some wealthier white planters made an effort to have their "natural sons" (the term for children outside of marriage who were produced with enslaved women) educated or trained as apprentices; some passed on property to them. For instance, in 1860, most of the 200 subscription students at Wilberforce College were the mixed-race sons of white planters, who paid for their education.