When we become a child of God, there is no more curse from ancestral or blood line or whatever it may be.
In Ezekiel 18 : 2- 3 and 19-20 we read
2. What mean ye, that ye use this proverb concerning the land of Israel, saying, The fathers have eaten sour grapes, and the children's teeth are set on edge?
3. As I live, saith the Lord God, ye shall not have occasion any more to use this proverb in Israel.
Ezekiel 18:19-20
19. Yet say ye, Why? doth not the son bear the iniquity of the father? When the son hath done that which is lawful and right, and hath kept all my statutes, and hath done them, he shall surely live.
20. The soul that sinneth, it shall die. The son shall not bear the iniquity of the father, neither shall the father bear...