"Eskild" (other forms are "Eskil" and "Eskel") is a Danish and Swedish form of the name "Askjell". You can check out this Danish website for verification as to the connection among all these names:
http://www.nordreisa.vgs.no/Larere/HI/2NO/Navn/Fornavn1.htm
The names are composed of the elements "es" or "as", meaning "God" and "ketill" ("kild", "kjell", etc.) meaning "sacrificial cauldron".
I rather doubt there exists an exact Hebrew name equivalent somewhere for any name meaning "God's sacrificial cauldron", so you may want to consider simply finding a similar-sounding name in Hebrew, in order to honor your grandfather. May I suggest the following?
Eshel - "tamarisk tree"
Eshkol - "cluster of grapes"
Your grandfather's middle name of "Anton" is much easier to find a Hebrew name translation for: "Hillel" (meaning "praised, famous") or "Segel" (meaning "treasure").
-- Nanaea