The Costa Family.
Reference: Charles A. Gauci. “An Illustrated Collection of the Coats of Arms of Maltese Families – Stemmi Maltesi” Publishers Enterprises Group (PEG) Ltd, Malta 1989.
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Last update: 02-01-2024.
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Note: Not a complete list of Descendants.

Part I – Oghuz Khan clans.

1. Giovanni Antonio Costa, nobile di Albenga, married with issue.
1.1. Giovanni Francesco de Costa. Ebbe, married to Teresa de Sayd, with issue.
1.1.1. Pietro de Costa, married 1636 Valletta to Giacoma Falzone, with issue. Michele Costa, married 1665 at Birkarkara, Malta to Speranza Grech., with issue. Francesco Costa, married 1701 Birkirkara to Maria Bartolo, with issue. Michele Costa, married 1738 to Cosmania Grech, with issue. Antonino Costa, married 1758 at Axiaq, Malta to Teresa Grech., with further issue. (Alunno) Enrico Costa, married 1746 Birkarkara, Malta to Rosa Gatt, with issue. Gregorio Costa, married 1785 Birkarkara, Malta to Margherita Borg, with issue. Vincenzo Costa, married 1825 Birkirkara to Maria Pisano, with issue. Carmelo Costa, married 1881 Birkirkara to Rosa Mifsud, with issue. Vincenzo Costa, married 1903 Birkirkara to Maria Carmela Zammit, with issue. Carmelo Costa, married 1937 Birkirkara to Rosina Cardona, with issue. Mons. Vincent Costa, (1947-., Bishop of Aqua Flaviae, (1998- Bishop of Umuarama Brazil (r. 2002-. Paolo Costa, married 1867 Luqa to Maria Spiteri, with issue. Andrea Costa, married 1897 Luqa to Marianna Fiott Maniscalco, with issue. Carmelo Costa, married 1929 Luqa to Antonia Zammit, with issue. Rita Costa, (1938-, married 1966 Luqa to Joseph Zammit, with issue. Perit Anton Zammit, (1970-., married 1996 Zurrieq to Rosa Borg, with issue. Giulia Zammit, (1997-. Rebecca Zammit, (1999-. Susannah Zammit, (2001-. Michele Costa, married 1825 Valletta to Carmela Schembri. Vincenzo Costa, married 1785 Valletta to Maddalena Formosa d’Armanin, with issue. Michele Costa, married 1837 Valletta to Teresa Cassar. Maria Costa, married 1808 Valletta to Eduardo Buhagiar. Teodora Costa, married (1) 1733 to Giuseppe Bondi, married (2) 1740 Birkirkara to Francesco Gauci. Giovanni Costa, married 1744 Nadur Gozo to Alonza Vella, with issue. Paolo Costa, married (1) to Orsola Rapa, married (2) 1799 Nadur Gozo to Giuseppa Pisano, with issue. (First Marriage) Giuseppe Costa, married (1) 1808 Nadur Gozo to Anne Vella, married 1839 Valletta to Caterina Buhagiar. (Second Marriage) Michele Costa, married 1827 Sannut Gozo to Anne Xiberras. Grazia Costa, married 1772 Gozo to Francesco Debono. Orsola Costa, married 1774 Gozo to Francesco Mifsud, with issue. Nicola Mifsud, married 1800 Nadur Gozo to Maria Vassallo. Giacinto Costa, married 1769 Valletta to Caterina Vella, with issue. Vincenzo Costa, married 1799 Valletta to Maria Morello, with issue. Emmanuele Costa, married 1819 Valletta to Maria Carbone, with issue. Vincenzo Costa, married 1858 Valletta to Maria Brincat. Antonia Costa, married 1822 Valletta to Vincenzo Mamo. Costanza Costa, married 1784 Valletta to Dr Vincenzo Xuereb JUD. Giovanna Battista Costa, married 1750 Birkirkara to Giovanni Casanova of Catania, Sicily. Evangelista Costa, married 1656 Zejtun to Tomaso Sardo or Surdo.  Giulio Costa, married (1) 1632 Zebbug to Paolina Bonnici, married (2) 1634 Birkirkara to Margherita Borg, with issue. Teresa Costa, married 1701 Lija to Salvatore Camilleri. Grazio Costa, married (1) 1658 Lija to Caterina Vella, married (2) 1677 Lija to Gioannella Calleja, with issue. (Second marriage) Maria Costa, married 1702 Valletta to Domenico Fenech.
1.1.2. Giovanni de Costa, married 1646 to Minichelle Borg.
1.1.3. Ottavio de Costa, married 1641 Birgu to Geronima d’Arena, with issue. Giovanni Costa, married 1660 Birgu to Ubaldesca Cannolo, with issue. Giuseppe Costa, married 1713 Birgu to Caterina Salamone, with issue. Gaetano Costa, married 1755 Birgu to Paula Friggeri, with issue. Giovanna Costa, married 1784 Birgu to Andrea Perotti. Antonio Costa, married 1740 Birgu to Anna Busuttil. Domenica Costa, married 1750 Birgu to Salvatore Borg. Leonardo Costa, married 1704 Birgu to Giulia Zammit, with issue. Alessandro Costa, married (1) 1735 Birgu to Anna Maria Stagnetta, married (2) 1766 Birgu to Maria Portelli. Maria Costa, married 1671 Senglea to Claudio Blasio, with issue. Antonia Blasio, married 1694 Senglea to Pasquale Contreras, with issue. Rosa Contreras, married 1712 Senglea to Saverio Michele Savona.
1.1.4. Gregorio de Costa, married 1643 Valletta to Elenica Maldonato, 4th Baronessa di Pietra Longa, with issue. Nobile Cintia Girolama Costa -Maldonato, 5th dejure Baronessa di Pietra Longa, (d. 1689), married 1659 Vittoriosa to Georgio Giovanni di Milo, with issue. Nobile Lucio di Milo Costa -Maldonato, 6th dejure Barone di Pietra Longa, (d. 1691), married 1685 Vittoriosa to Teresa Barbara, dsp. Nobile Francesco di Milo Costa -Maldonato, (d. 1704), 7th dejure Barone di Pietra Longa, married (1) 1687 Senglea to Anna Magro, married (2) 1692 Senglea to Anna Magro, married (3) 1701 Valletta to Clemenza Gatt, dsp. Nobile Caterina di Milo Maldonato, (d. 1712), 8th dejure Baroness di Pietra Longa, married 1678 Valletta to Giacomo de Fardella, , Alunno di Wladyslaw Konstanty Vasa, Count of Wasenau, Captain of the guards to Queen Christina of Sweden in exile in Rome, Papal Chamerlain to Pope Alexander VIII,  illegitimate son of Wladyslaw IV Vasa, King of Poland r. 1632-1648 and Jadwiga Luskowska, with issue. Nobile Eugenia Fardella, (d. 1756), 9th dejure Baroness di Pietra Longa, married 1734 Valletta to Salvatore Dimech, dsp. Nobile Francesca di Milo Maldonato, married 1702 Vittoriosa to Francesco d’Armenia. Nobile Petronilla Costa-Maldonato, married 1663 Vittoriosa to Theodore Pastiraci. Nobile Speranza Costa-Maldonato, married 1671 Vittoriosa to Francesco Fenech.