Sources and Apportionment of Share of Omitted Children

and Grandchildren. The share of the estate which is assigned to a child or issue omitted in a will, as mentioned in Section 501 of this Title, must first be taken from the estate not disposed of by the will, if any; if that is not sufficient, so much as may be necessary must be taken from all the devisees or legatees, in proportion to the value they may respectively receive under the will, unless the obvious intention of the testator in relation to some specific devise or bequest, or other provision of the will, would thereby be defeated; in such case, such specific devise, legacy or provision may be exempted from such apportionment, and a different apportionment, consistent with the intention of the testator, may be adopted.