Del. Code Ann. tit. 12, § 2313
(a) (1) If a devisee or legatee who is a grandparent or lineal descendant of a grandparent of the testator is dead at the time of the execution of the will, fails to survive the testator or is treated as if the devisee or legatee predeceased the testator, the issue of the deceased devisee or legatee who survived the testator by 120 hours take in place of the deceased devisee or legatee, per stirpes.
36 Del. Laws, c. 259, § 1; Code 1935, § 3854; 12 Del. C. 1953, § 2313; 59 Del. Laws, c. 384, § 1; 70 Del Laws, c. 186,, § 1