I would personally recommend this site. Don’t think in a human way, but spiritually. Psalm 106:6 Both we and our ancestors have sinned; we have committed iniquity, have done wickedly. there is nothing you and i can do about our ancestors,we can only entrust there souls in Jesus hands,but if your sure if they didn’t keep the Commandments and in line with Sacraments you need not pray for them.But if your sure about them than you can pray for their souls, offer holy mass for them.Do what seems good as the will of God.GOD Bless
Exodus 20:4 You shall not make for yourself an idol, whether in the form of anything that is in heaven above, or that is on the earth beneath, or that is in the water under the earth. 5 You shall not bow down to them or worship them; for I the Lord your God am a jealous God, punishing children for the iniquity of parents, to the third and the fourth generation of those who reject me,
Baruch 2:11 And now, O Lord God of Israel, who brought your people out of the land of Egypt with a mighty hand and with signs and wonders and with great power and outstretched arm, and made yourself a name that continues to this day, 12 we have sinned, we have been ungodly, we have done wrong, O Lord our God, against all your ordinances. 13 Let your anger turn away from us, for we are left, few in number, among the nations where you have scattered us. 14 Hear, O Lord, our prayer and our supplication, and for your own sake deliver us, and grant us favor in the sight of those who have carried us into exile; 15 so that all the earth may know that you are the Lord our God, for Israel and his descendants are called by your name.
16 O Lord, look down from your holy dwelling, and consider us. Incline your ear, O Lord, and hear; 17 open your eyes, O Lord, and see, for the dead who are in Hades, whose spirit has been taken from their bodies, will not ascribe glory or justice to the Lord; 18 but the person who is deeply grieved, who walks bowed and feeble, with failing eyes and famished soul, will declare your glory and righteousness, O Lord.