| | Sex | Birth place | Death place | Father | Mother | Joined with |
|---|
| Constantin Angelescu (c1855-1891) | M | Focșani, Vrancea County, Romania | Buzău, Buzău County, Romania | | | Aristița Bagdat (1856-1895) |
| Constantin Bagdat (1851-1885) | M | Râmnicu Sărat, Buzău County, Romania | Râmnicu Sărat, Buzău County, Romania | Ianache Bagdat (c1816-1872) | NN Oprina | Paulina Stănescu (c1854-c1920) |
| Constantin Bagdat (1854-1944) | | Nișcov, Buzău County, Romania | | Grigore Bagdat (1818-1878) | Raluca Chirculescu (c1825-c1895) | Ana Ioachim + Alexandrina Vernescu + Dida Dimitriu |
| Constantin Balaban (1780-1845) | M | Bălăbănești, Galaţi County, Romania | Bălăbănești, Galaţi County, Romania | Lupu Balaban (c1750-c1810) | | |
| Constantin Bosianu (1815-1882) | M | Bucharest, Wallachia | Bucharest, Romania | | | |
| Constantin Bottea (1845-1909) | M | Bucharest, Romania | Bucharest, Romania | Costache Bottea (1815-1887) | Maria Luxandra Bădulescu | Henriette Micolle (1856-1925) |
| Constantin Bottea (1907-1995) | M | Bucharest, Romania | Bucharest, Romania | Emil Bottea (1877-1917) | Elena Orescu (1885-1969) | Margareta Fărcăşanu (1913-2003) |
| Constantin Brâncoveanu (1654-1714) | M | Brâncoveni, Olt County, Romania | Constantinople, Turkey | Papa (Matei) Brâncoveanu (c1625-1655) | Stanca Cantacuzino (c1635-1699) | |
| Constantin Brăescu (1825-c1890) | M | Fălticeni, Suceava County, Romania | | | | Cleopatra Gorcescu (c1830-c1895) |
| Constantin Bucuroiu (c1895-c1970) | M | Râmnicu Sărat, Buzău County, Romania | Poiana Țapului, Prahova County, Romania | | | Elena Coșoreanu (1899-1974) |
| Constantin Buzdughină (1926-2005) | M | Romania | Sibiu, Sibiu County, Romania | | | Amelia Lupescu (1926-2010) |
| Constantin Cantemir (1705-1747) | M | Constantinople, Turkey | Saint Petersburg, Russia | Dimitrie Cantemir (1673-1723) | Cassandra Cantacuzino (1682-1713) | Anastasya Dmitrievna Golitsyna (1698-1746) |
| Constantin Cantemir (1705-1776) | M | | Rogan, Kharkiv Rayon, Kharkiv Oblast, Ukraine | Antioh Cantemir (1670-1724) | Caterina Ceaur (c1675-1708) | Irina Balș (c1710-1737) + Natalya Ivanovna Golovina (c1720-c1745) + Sofia Bogdanovna Passek (1722-1783) |
| Constantin Cantemir (1612-1693) | M | Silișteni, Vaslui County, Romania | Iași, Iași County, Moldavia, Romania | Tudor Silișteanu (c1580-1627) | Maria NN (c1595-1613) | Anastasia Ghica (c1625-1646) + Maria of Ceucani (c1640-1668) + Ana Bantaș (c1645-1677) + Ruxandra Harasi (c1655-c1720) |
| Constantin Ciogolea (c1885-c1955) | M | | | | | Maria Ștefănescu (c1890-c1960) |
| Constantin Coandă (1884-c1896) | M | Romania | Romania | Constantin Coandă (1857-1932) | Aïda Danet (1863-1944) | |
| Constantin Coandă (1857-1932) | M | Craiova, Dolj County, Romania | Bucharest, Romania | Mihalache Coandă (1829-c1890) | Theodora Theodoris (c1835-c1900) | Aïda Danet (1863-1944) |
| Constantin Costaki (c1720-c1770) | M | | | Iordache Costaki (c1690-c1735) | Maria Racoviță (c1695-c1750) | Safta Bogdan (c1728-c1790) |
| Constantin Coșoreanu (1895-1968) | M | Râmnicu Sărat, Buzău County, Romania | Buzău, Buzău County, Romania | Pavel Coșoreanu (1871-1945) | Paraschiva Neguț (1876-1944) | Ecaterina Dumitrache (c1900-c1975) |
| Constantin Dimitrescu (c1900-1980) | M | | | | | Virginia Dragomir (1903-1976) |
| Constantin Djuvara (1825-1883) | M | Brăila, Brăila County, Wallachia, Romania | Brăila, Brăila County, Romania | Ioan Djuvara (18..-1856) | Maria Caribol (18..-18..) | Eliza Stavarachi Divani (1838-1917) |
| Constantin Docan (c1630-c1690) | M | | | | | |
| Constantin Donici (c1890-c1960) | M | | Pucioasa, Dâmbovița County, Romania | Nicolae Donici (c1855-1903) | Lucia Greceanu (c1865-1914) | Elena Cantacuzino (1900-1983) |
| Constantin Donici (c1735-c1800) | M | | | Apostolache Donici (c1710-c1780) | | |
| Constantin Dragomir (1904-1985) | M | | | Kiriac Dragomir (1881-1952) | Smaranda Popovici (1883-1948) | Maria Tudorache (1908-1974) |
| Constantin Dudescu (c1695-1767) | M | | | | | Maria Cantemir (1700-1757) |
| Constantin Dudescu (1853-1894) | M | Bucharest, Romania | Bucharest, Romania | Alexandru Dudescu (1807-1880) | Zoe Kretzulescu (c1810-c1885) | Margot Zamfirescu (1858-1925) |
| Constantin Emandi (1912-1987) | M | Râmnicu Sărat, Buzău County, Romania | Bucharest, Romania | Ion Emandi (1871-1958) | Margareta Orășanu (1882-1938) | Tatiana Schneider |
| Constantin Filotti (1860-c1880) | M | | | Neculaie Filotti (c1825-c1880) | Nomen nescio | |
| Constantin Filotti (1849-1911) | M | Brăila, Brăila County, Romania | Bucharest, Romania | Nestor Filotti (c1814-1869) | Sofia Dulgheru (1825-1889) | Sofia unknown (1852-c1915) |
| Constantin Filotti (c1883-c1900) | M | Romania | Romania | Anton Filotti (1844-1887) | Eliza Bagdat (1852-1939) | |
| Constantin Filotti (1888-1961) | M | Brăila, Brăila County, Romania | Bucharest, Romania | Anastase Filotti (1854-1936) | Alexandrina Iarca (1865-c1950) | Valeria Iarca (c1890-c1917) + Lucia Drăghici (1883-1960) |
| Constantin Filotti (1919-1990) | M | Romania | Romania | Constantin Filotti (1888-1961) | Lucia Drăghici (1883-1960) | Andreea Constantinescu (1925) |
| Constantin Flondor (c1867-c1875) | M | | | Gheorghe Flondor (1828-1892) | Isabella Dobrowolski von Buchenthal (1835-1890) | |
| Constantin Flondor (1889-1942) | M | Roman, Neamț County, Romania | Chernivtsi, Chernivtsi Oblast, Ukraine | Tudor Flondor (1862-1908) | Maria Ciuntu (1865-1950) | |
| Constantin Flondor (1764-1815) | M | | | Ioan Flondor (1710-1784) | Anastasia Arapu (c1715-c1775) | Paraschiva von Kalmucki (c1775-c1830) |
| Constantin Flondor (c1680-c1710) | M | | | Toader Flondor (c1650-c1620) | Maria Gherman (c1655-c1710) | |
| Constantin Iarca (1846-1928) | M | Râmnicu Sărat, Buzău County, Romania | Romania | Iordache Iarca (1796-1872) | | Amelia Thiermann (1853-1934) |
| Constantin Iarca (c1885-c1960) | M | Romania | Romania | Dumitru Iarca (1856-1941) | Sofia Saligny (c1856-c1930) | Georgeta Scully-Logotheti |
| Constantin Iarca (1855-1940) | M | Ojasca, Buzău County, Romania | Bucharest, Romania | Costache Iarca (1819-1901) | Irina Cațacal (c1823-c1880) | Paulina Djuvara (1870-1940) |
| Constantin Iarca (c1730-c1800) | M | | Râmnicu Sărat, Buzău County, Romania | | | |
| Constantin Ionescu (1920-1979) | M | Cărpiniștea, Buzău County, Romania | | Mihai Ionescu (c1885-c1967) | Crisanta Coșoreanu (1897-1970) | Aurelia NN (c1925-c1975) |
| Constantin Iordăchescu (1903-1964) | M | | | | | Elena Ignat (1908-1942) |
| Constantin Lupescu (1875-1935) | M | Tăriceni, Călăraşi County, Romania | Tăriceni, Călăraşi County, Romania | | | Maria Unknown (1879-1930) |
| Constantin Mavrocordat (1711-1769) | M | Istanbul, Turkey (Ottoman Empire) | Iaşi, Iaşi County, Moldavia, Romania | Nicolae Mavrocordat (1680-1730) | Pulcheria Tsouki (c1683-c1713) | Smaranda Cantacuzino (c1712-1730) + Ecaterina Rosetti (c1715-1775) |
| Constantin Mincu (1969) | M | Bucharest, Romania | | Corneliu Mincu (1930-1996) | Maria Pătrașcu (1935) | |
| Constantin Petala (1865-c1950) | M | | | NN Petala | | Maria Bagdat (1867-1957) |
| Constantin Petcu (c1920-c2000) | M | | | | | Olimpia Buni (c1925-c2010) |
| Constantin Poiană (1924-c2000) | M | | | | | Rodica Pleșu (1926-2019) |
| Constantin Popescu (c1945-1991) | M | | | | | Mioara Vasiliu (1949-) |
| Constantin Popescu (1872-c1940) | | Ploiești, Prahova County, Romania | | Marin Popescu (c1848-c1910) | Elena Unknown (1850-c1915) | |
| Constantin Popovici (c1890-1945) | M | | Romania | | | Alexandrina Filotti (1896-1986) |
| Constantin Porfireanu (1921-1978) | M | Romania | | Gheorghe Porfireanu (c1890-1957) | Alexandrina Filotti (1896-1986) | |
| Constantin Prezan (1861-1943) | M | Sterianu de Mijloc, Dâmbovița County, Romania | Bucharest, Romania | Constantin Prezan | Alexandrina Prezan | Clementina Bantaș + Elena Olga Eliad (1877-c1950) |
| Constantin Sturdza (c1712-1790) | M | | | Alexandru Sturdza (1685-1754) | Safta Paladi (c1705-c1750) | Catrina Cantemir (c1725-c1750) |
| Constantin Sutzu (1841-1914) | M | Athens, Greece | Bucharest, Romania | Dimitri Sutzu (c1810-1865) | Smaragda Sutzu (1818-1874) | Natalia Mavrogheni (1848-1904) + Maria Romalo (1854-1928) |
| Constantin Tașcă (1893-1984) | M | Bălăbănești, Galați County, Romania | | Gheorghe I. Tașcă (1847-1935) | Maria Dabija (1850-1945) | Maria Neculau (1899-1985) |
| Constantin Tașcă (1893–1984) | M | Bălăbănești, Galați County, Romania | | Gheorghe I. Tașcă (1847-1935) | Maria Dabija (1850-1945) | Maria Necolau (1899-1985) |
| Constantin Tașcă (1929-1994) | M | Bârlad, Vaslui County, Romania | Bucharest, Romania | Constantin Tașcă (1893-1984) | Maria Neculau (1899-1985) | Marinela Zancu (1938-) |
| Constantin Timu (c1895-c1960) | M | | | | | Elena Dimitriu (c1900-c1975) |
| Constantin Vasiliu (1951-) | M | | | Mihai Vasiliu (1924-2004) | Lucia Perida (c1930-) | Ecaterina Gâtstrâmb (c1955-) |
| Constantin d'Orléans (2003-) | M | Paris, France | | Charles d'Orléans (1972-) | Ileana Manos (1971-) | |
| Constantin von Plettenberg (1959-) | M | Bad Kreuznach, Bad Kreuznach District, Rhineland-Palatinate, Germany | | Egbert von Plettenberg (1917-1995) | Luise-Dorothea von Hohenzollern (1924-1988) | |
| Constantin Ștefănescu (1897-1960) | M | | | Sabba Ștefănescu (1857-1931) | Constanța Demetrescu-Negrea (1871-1944) | |
