- Castlereagh
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10th Viscount (Frederick Aubrey) b. 6 Sep 19721st Viscount (Robert) b. 27 Sep 1739, d. 8 Apr 1821
2nd Viscount (Robert) b. 18 Jun 1769, d. 12 Aug 1822
3rd Viscount (Charles William) b. 18 May 1778, d. 6 Mar 1854
4th Viscount (Frederick William Robert) b. 7 Jul 1805, d. 25 Nov 1872
5th Viscount (George Henry Robert Charles William) b. 26 Apr 1821, d. 6 Nov 18846th Viscount (Charles Stewart) b. 16 Jul 1852, d. 8 Feb 19157th Viscount (Charles Stewart Henry) b. 13 May 1878, d. 11 Feb 1949
8th Viscount (Edward Charles Robert) b. 18 Nov 1902, d. 17 Oct 19559th Viscount (Alexander Charles Robert) b. 7 Sep 1937, d. 20 Jun 2012
Viscount (Frederick Aubrey) b. 6 Sep 1972Viscount (Robert) b. 18 Jun 1769, d. 12 Aug 1822
Viscountess (Frances) b. c 1751, d. 18 Jan 1833 - Castlerosse
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1st Baron (Valentine) b. 16381st Baron (Valentine) b. Jan 1754, d. 3 Oct 18121st Viscount (Valentine) b. Jan 1754, d. 3 Oct 18122nd Baron (Nicholas) d. 26 Apr 17202nd Baron (Valentine) b. 15 Jan 1788, d. 31 Oct 18532nd Viscount (Valentine) b. 15 Jan 1788, d. 31 Oct 18533rd Baron (Thomas) b. 15 Jan 1789, d. 26 Dec 18713rd Baron (Valentine) b. Mar 1695, d. 30 Jun 17363rd Viscount (Thomas) b. 15 Jan 1789, d. 26 Dec 18714th Baron (Thomas) b. 1726, d. 9 Sep 17954th Baron (Valentine Augustus) b. 16 May 1825, d. 9 Feb 19054th Viscount (Valentine Augustus) b. 16 May 1825, d. 9 Feb 19055th Baron (Valentine Charles) b. 1 Dec 1860, d. 14 Nov 19415th Baron (Valentine) b. Jan 1754, d. 3 Oct 18125th Viscount (Valentine Charles) b. 1 Dec 1860, d. 14 Nov 19416th Baron (Valentine Edward Charles) b. 29 May 1891, d. 20 Sep 19436th Viscount (Valentine Edward Charles) b. 29 May 1891, d. 20 Sep 19437th Baron (Gerald Ralph Desmond) b. 20 Dec 1896, d. 14 Feb 19527th Viscount (Gerald Ralph Desmond) b. 20 Dec 1896, d. 14 Feb 1952Viscount (Valentine Edward Charles) b. 29 May 1891, d. 20 Sep 1943Viscountess (Jessica Doris) b. 4 Nov 1900, d. 12 Dec 1942
- Castles
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Alicia b. 17 Mar 1805Louisa Amelia d. 25 Jun 1938
- Castleton of Sandbeck
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1st Earl, co. York (James) d. 23 May 17231st Viscount, co. York (James) d. 23 May 1723
- Castleton
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10th Baronet, of St. Edmondsbury, co. Suffolk (John) d. 11 Jun 178811th Baronet, of St. Edmondsbury, co. Suffolk (Edward) b. c 1706, d. 15 Oct 179412th Baronet, of St. Edmondsbury, co. Suffolk (Edward) d. 17 Nov 18101st Baronet, of St. Edmondsbury, co. Suffolk (William) b. c 1590, d. c 16431st Viscount, co. Limerick (Nicholas) b. c 1561, d. 17 May 16312nd Baronet, of St. Edmondsbury, co. Suffolk (John) d. c Nov 16772nd Viscount, co. Limerick (Nicholas) b. c 1595, d. 13 Nov 16403rd Baronet, of St. Edmondsbury, co. Suffolk (John) b. 4 Aug 1644, d. c Jun 17053rd Viscount, co. Limerick (Nicholas) b. c 1627, d. 16414th Baronet, of St. Edmondsbury, co. Suffolk (Robert) b. 6 Nov 1659, d. c 17104th Viscount, co. Limerick (Peregrine) b. c 1628, d. 16505th Baronet, of St. Edmondsbury, co. Suffolk (Philip) b. 26 Jul 1663, d. c Jul 17245th Viscount, co. Limerick (George) b. 12 Oct 1631, d. 27 May 17146th Baronet, of St. Edmondsbury, co. Suffolk (Charles) b. 4 Sep 1659, d. Sep 17456th Viscount, co. Limerick (James) d. 23 May 17237th Baronet, of St. Edmondsbury, co. Suffolk (Charles) d. 22 Oct 17498th Baronet, of St. Edmondsbury, co. Suffolk (John) b. c 1698, d. 7 Nov 17779th Baronet, of St. Edmondsbury, co. Suffolk (William) b. c 1701, d. 16 Jan 1788Blair Jason b. 11 Jul 1970Blake Jason b. 16 Dec 2004Bridget b. 3 Jan 1649/50, d. c Mar 1726Charles, 6th Bt. b. 4 Sep 1659, d. Sep 1745Charles, 7th Bt. d. 22 Oct 1749Edward, 11th Bt. b. c 1706, d. 15 Oct 1794Edward, 12th Bt. d. 17 Nov 1810Elizabeth d. c Nov 1748Elizabeth d. 12 Oct 1772Fannie Chaffee b. 23 Jul 1912John, 10th Bt. d. 11 Jun 1788John, 2nd Bt. d. c Nov 1677John, 3rd Bt. b. 4 Aug 1644, d. c Jun 1705John, 8th Bt. b. c 1698, d. 7 Nov 1777Joshua Allan b. 1993Julia Dent b. 27 Jan 1949Kam Blair b. 25 Jan 2007Louise Caroline b. 7 Jan 1964Margaret d. c Aug 1702Melissa Anne b. 25 May 1971Philip, 5th Bt. b. 26 Jul 1663, d. c Jul 1724Robert, 4th Bt. b. 6 Nov 1659, d. c 1710Sarah d. 3 Feb 1727Viscountess (Frances) d. 1652Viscountess (Grace) d. 16 Nov 1667Viscountess (Sarah) d. c Oct 1717William d. 24 May 1616William, 1st Bt. b. c 1590, d. c 1643William, 9th Bt. b. c 1701, d. 16 Jan 1788
- Castletown of Upper Ossory
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1st Baron, in the Queen's County (John) b. 23 Sep 1807, d. 22 Jan 1883
2nd Baron, in the Queen's County (Bernard Edward Barnaby) b. 29 Jul 1848, d. 29 May 1937
Baroness (Augusta Mary) b. 1810, d. 3 Jun 1899
Baroness (Emily Ursula Clare) b. 18 Jul 1853, d. 11 Mar 1927 - Castley
- Castlyn
- Casto
- Caston
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Jane Berkeley d. 1977
- Castonguay
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Dylan Martin Nelson b. 1984, d. 2000Majessa Lillian b. 1983Marina June b. 16 Jun 1956
- Castravelli
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Sophie Marie d. 1985
- Castres
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Comte de (Bouchard VII) d. 16 Nov 1371
- Castries
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Comte de (Maximilian) b. 21 Dec 1908Comte de (Rene) d. 1950Duc de (Edmond Eugene Philippe Hercule) d. 2 Aug 1866
- Castrillo Gonzáles
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Marizol b. 14 May 1977
- Castrillo y Sanjuan
- Castrillo
- Castro Canto e Mello
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Domitila de d. 3 Nov 1867
- Castro Cardoso dos Santos
- Castro des Duques de Grimaldi
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Alfonso di b. 7 Aug 1936, d. 24 Mar 1994
- Castro Freire Rocheta
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Gonçalo de b. 1975Rita de b. 1978
- Castro Freire
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Alexander Anthony de b. 2 Mar 1959Carolina de b. 1986Catherine Maria de b. 30 Aug 1954Diogo de b. 1986Jorge Leonardo de b. 17 Mar 1956Leonardo Rey Calaco de d. 1970Manuel Filipe de b. 1984Margaret Heather de b. 1920, d. 2005Martin Afonso de b. 1986Martin Anthony de b. 8 Jan 1952Philippa Mary de b. 4 Sep 1949
- Castro Grundland
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Santiago b. 15 Oct 2006
- Castro Padula
- Castro Tornese
- Castro y Barinaga
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Alicia de b. 5 May 1931Beatriz de b. 22 Jan 1940Luis de b. 1 Mar 1926Maria de la Concepcion de b. 14 Dec 1921Maria Teresa de b. 22 Oct 1934
- Castro y Frau
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Jose Maria de b. 29 Jul 1959
- Castro y Martinez
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Francisco Javier de b. 2 Oct 1959Luis Carlos de b. 3 Feb 1958
- Castro y Mazuelos Villamizar
- Castro y Mazuelos
- Castro y Munoz
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Carlos de b. 25 Oct 1900Jose Maria de b. 27 Aug 1898, d. 28 Aug 1925Marino de b. 27 Nov 1896, d. 30 Dec 1955
- Castro y Olivera
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Jose Maria de b. 29 Aug 1923
- Castro y Pinedo
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Mariano de b. 20 Jul 1871, d. 1 Jun 1926
- Castro
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Ellen de d. 1924Ferdinand de b. 28 May 1926, d. 20 Mar 2008Inez de b. 1320, d. 1355Joan de d. 1374Joan de b. 27 Apr 1882Joanna de d. 1479Maria de la Concepcion de b. 29 Nov 1900Pedro Fernandez de d. 1343Renier de b. 3 Dec 1883, d. 13 Jan 1973Vizcondeza de (Domitila) d. 3 Nov 1867
- Castrogiovanni
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Alberto di b. 17 Sep 1839, d. 12 Jul 1844
- Castroponce
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Condessa de (Maria Eugenia) b. 1 Mar 1946
- Caswall
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George b. 1763, d. 1825Maria b. 1820Susan Constantia d. 1845Timothy b. 1733, d. 1802
- Caswell
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George Frederick Charles b. 1887, d. 1947Gertrude Winby b. 1892, d. 1978June Marian b. 1923, d. 18 May 2017Mary Eliza d. 30 Aug 1892
- Catala y Benet
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Maria Gracia b. 11 Dec 1904
- Catalan
- Catalano
- Cataldi
- Cataneo
- Catania
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Dolly d. 13 Dec 1954Effie Violet Hazel d. 13 Dec 1954Georgiana Augusta d. 1890Minnie Euphemia Henrietta McMillan d. 5 May 1953
- Catano
- Catanzarite
- Catargiu
- Catargiu-Obrenovic
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Elnea Maria b. 1831, d. 16 Jul 1876
- Catchmay
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Barbara b. 1665, d. 23 Jan 1741Jane b. 25 Jul 1703, d. 5 Mar 1777Tracy b. c 1649, d. 30 Nov 1708
- Catchpole
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David James Robinson b. 26 Feb 1963Hannah Margaret b. 6 Aug 2002Jack Robinson b. 10 Jul 2000Judith Sarah b. 3 Mar 1962Priscilla d. c Feb 1680/81Teresa Joan b. 30 Nov 1954