Yep, might have been.
SOURCE: Lincoln's Emancipation Proclamation, Allen C. Guelzo, p. 23
[F]rom 1850 until 1862, Lincoln and his wife, Mary Todd Lincoln, were embroiled in litigation in Kentucky over the settlement of the estate of Mary's father, litigation that netted the Lincolns a share in the proceeds of selling the Todd family slaves.
In any case, as I said, Mr. Todd had plenty of children to divvy up his inheritance among.