St. Evaristus (97-105) 6th Pope
He founded the first seven diaconates, considered to be the origin of the College of Cardinals
He ordered that Christian marriage vows must be pronounced and blessed before a priest
St. Alexander I (105-115) 7th Pope
He instituted the use of holy water in churches.
He prescribed that consecrated hosts be made from unleavened bread.
He ordered the mixing of wine and water at Mass.
St. Sixtus I (115-125) 8th Pope
He instructed that the Sanctus would
be recited by the priest and people
Sanctus:
“Holy, holy, holy, Lord, God of hosts,
Heaven and earth are full of your glory,
Hosanna in the highest,
Blessed is He who comes in the name of the Lord,
Hosanna in the highest.”
St. Telesphorus (125-136) 9th Pope
He introduced Midnight Mass of 
Christmas
He made fasting during Lent obligatory
Gnosticism begins to make its appearance in Church affairs
He composed and introduced the Gloria in Excelsis
Gloria in Excelsis:
“Glory to God in the highest,
and peace to his people on earth.
Lord God, heavenly King,
almighty God and Father,
we worship you, we give you thanks,
we praise you for your glory.
Lord Jesus Christ, only Son of the Father,
Lord God, Lamb of God,
you take away the sin of the world:
have mercy on us;
you are seated at the right hand of the Father:
receive our prayer.
for you alone are the Holy One,
you alone are the Lord,
you alone are the Most High,
Jesus Christ,
with the Holy Spirit,
in the glory of God the Father. Amen”
St. Hyginus (136-140) 10th Pope
He organized the clergy in a hierarchical basis
He instituted the practice of godparents to assist newly born
He decreed that all churches must be consecrated
He excommunicated Gnostics
St. Pius I (140-155) 11th Pope
He ordered that Easter must be
celebrated on a Sunday
He opposed Agnosticism and Gnosticism
Antonius Pius reigned as Roman emperor
He established rules for the conversion of Jews
He welcomed pagan turned Church apologist Justin Martyr
St. Anicetus (155-160) 12th Pope
He was first pope to public statement
against a heresy, Monatism
He deemed that clergy should not wear long hair.
Figuring the date of Easter became a long running controversy
St. Soter (166-175) 13th Pope
He ratified matrimony valid only if blessed by a priest.
He reprimanded the sexual behavior and laxity of the Church at Corinth
He fought against the heresy of Monatism in Africa
St. Eleutherius (175-189) 14th Pope
He renewed condemnation of Monatism and Gnosticism
He sent missionaries to convert the Britains
A minor king in Britain became the first Christian king in Europe
He abolished some Jewish customs concerning purity and impurity of foods.
St. Victor I (189-199) 15th Pope
He convened synods to settle the Easter 
issue
He condemned Monatism and Gnostacism
He decreed that baptism might be administered with any natural water