Paul was married twice.
He married first to his niece Countess Orsolya Esterházy of Galántha, daughter of his brother Count István Esterházy of Galántha and his wife Countess Erzsébet Thurzó of Bethlenfalva, on 7 February 1652 in Eisenstadt.
Paul's marriage to his eldest brother's daughter was done in part to prevent the division of the Esterházy family's property Paul and Orsolya had nineteen children:
Prince Miklós Antal Esterházy of Galántha (1655–1695)
Count Pál Esterházy of Galántha (1657–1664)
Countess Katalin Esterházy of Galántha (1659–1664)
Count István József Esterházy of Galántha (1660–1669)
Prince László Ignac Esterházy of Galántha (1662–1689)
Princess Krisztina Esterházy of Galántha (1663–1732)
Count Elek Domokos Esterházy of Galántha (1664–1673)
Count Ferenc Agoston Esterházy of Galántha (1666–1673)
Countess Ilona Esterházy of Galántha (1667–1681)
Count János Benedek Esterházy of Galántha (1668–1683)
Princess Orsolya Esterházy of Galántha (1670–after 1696)
Mihály I, 2nd Prince Esterházy of Galántha (1671–1721)
Count György Bernat Esterházy of Galántha (1672–1672)
Prince Gábor Esterházy of Galántha (1673–1704)
Count Pál Esterházy of Galántha (1675–1683)
Princess Anna Julia Esterházy of Galántha (1676–1700)
Count Imre Esterházy of Galántha (1677–1677)
Princess Anna Terézia Esterházy of Galántha (1679–after 1692)
Prince Adam Esterházy of Galántha (1680–1720)
After the death of his first wife, Paul married Countess Éva Thököly of Késmárk, daughter of István, Count Thököly of Késmárk and his wife Mária Gyulaffy of Rátót.
Paul and Éva had the following children:
Count István Esterházy of Galántha (1683–1683)
Princess Mária Terézia Anna Esterházy of Galántha (1684–1755)
Princess Katalin Roza Esterházy of Galántha (1685–1686)
Princess Franziska Jozefa Esterházy of Galántha (1686–1688)
József I Simon Antal, 3rd Prince Esterházy of Galántha (1688–1721)
Prince Tamas Ignac Esterházy of Galántha (1689–1689)
Prince Zsigmond Lipot Esterházy of Galántha (1692–1693)
Paul was married twice. He married first to his niece Countess Orsolya Esterházy of Galántha, daughter of his brother Count István Esterházy of Galántha and his wife Countess Erzsébet Thurzó of Bethlenfalva, on 7 February 1652 in Eisenstadt. Paul's marriage to his eldest brother's daughter was done in part to prevent the division of the Esterházy family's property Paul and Orsolya had nineteen children:
Prince Miklós Antal Esterházy of Galántha (1655–1695)
Count Pál Esterházy of Galántha (1657–1664)
Countess Katalin Esterházy of Galántha (1659–1664)
Count István József Esterházy of Galántha (1660–1669)
Prince László Ignac Esterházy of Galántha (1662–1689)
Princess Krisztina Esterházy of Galántha (1663–1732)
Count Elek Domokos Esterházy of Galántha (1664–1673)
Count Ferenc Agoston Esterházy of Galántha (1666–1673)
Countess Ilona Esterházy of Galántha (1667–1681)
Count János Benedek Esterházy of Galántha (1668–1683)
Princess Orsolya Esterházy of Galántha (1670–after 1696)
Mihály I, 2nd Prince Esterházy of Galántha (1671–1721)
Count György Bernat Esterházy of Galántha (1672–1672)
Prince Gábor Esterházy of Galántha (1673–1704)
Count Pál Esterházy of Galántha (1675–1683)
Princess Anna Julia Esterházy of Galántha (1676–1700)
Count Imre Esterházy of Galántha (1677–1677)
Princess Anna Terézia Esterházy of Galántha (1679–after 1692)
Prince Adam Esterházy of Galántha (1680–1720)
After the death of his first wife, Paul married Countess Éva Thököly of Késmárk, daughter of István, Count Thököly of Késmárk and his wife Mária Gyulaffy of Rátót. Paul and Éva had the following children:
Count István Esterházy of Galántha (1683–1683)
Princess Mária Terézia Anna Esterházy of Galántha (1684–1755)
Princess Katalin Roza Esterházy of Galántha (1685–1686)
Princess Franziska Jozefa Esterházy of Galántha (1686–1688)
József I Simon Antal, 3rd Prince Esterházy of Galántha (1688–1721)
Prince Tamas Ignac Esterházy of Galántha (1689–1689)
Prince Zsigmond Lipot Esterházy of Galántha (1692–1693)
Paul I, Prince Esterházy