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Claire McCaskill
Claire McCaskill, Democratic U.S. Senator from Missouri 2007-2019, first woman elected to the Senate from Missouri; former Jackson County prosecutor and state auditor; lost the 2018 race to Josh Hawley and became an NBC/MSNBC analyst.
Claire R. Kelly
Claire Rita Kelly (born 1965) is an American jurist serving as a judge on the United States Court of International Trade since 2013, appointed by President Barack Obama.
Claire Reynolds
Claire Reynolds is an American attorney and politician, the Democratic nominee for the U.S. House in Texas's 11th District, facing incumbent Republican August Pfluger in 2026.
Claire Valdez
Claire Valdez, New York State Assembly member for District 37 (Queens) and UAW Local 2110 organizer, won the 2026 Democratic primary for NY-7 backed by Mamdani and Sanders.
Claire Wilson (Washington politician)
Claire Wilson is an American Democratic politician serving in the Washington State Senate from the 30th district since 2019, previously a Federal Way school board director.
Claire Wineland
Claire Wineland, also known as Claire Lucia Wineland, was an American activist with cystic fibrosis who founded Claire's Place Foundation and died in 2018 at age 21.
Clairvoyance
Clairvoyance is the claimed ability to perceive objects or events without the known senses, a form of extrasensory perception tied to 19th-century spiritualism and tested in parapsychology experiments.
Clal Insurance Enterprises
Clal Insurance Enterprises is an Israeli insurance, finance, and credit-card group listed on the Tel Aviv Stock Exchange, with no controlling shareholder and over NIS 420 billion in assets.
Clan
Clan: a unilineal or ambilineal descent group claiming common, often mythical, ancestry without demonstrated genealogical links (Gaelic clann). Distinct from a lineage; typically exogamous; genetic studies of Central Asian clans support shared clan ancestry but not tribal ancestry.
Clan Campbell
Clan Campbell (Clann Chaimbeul), a Scottish Highland clan of Argyll whose chief is the Duke of Argyll (Mac Cailein Mòr); rose under Robert the Bruce, became Earls of Argyll in 1457, and is linked to the 1692 Glencoe massacre.
Clan del Golfo
Clan del Golfo (Gulf Clan), also AGC/Urabeños and since 2024 Ejército Gaitanista de Colombia, is Colombia's largest illegal armed drug-trafficking group, founded in 2006 from AUC paramilitary remnants, active in hundreds of municipalities.
Clan Donald
Clan Donald (MacDonalds, Clann Dòmhnaill), Scotland's largest Highland clan, descended from Donald of Islay, grandson-line of Somerled; produced the Lords of the Isles (1336-1493) with branches Sleat, Clanranald, Glengarry, Keppoch, Glencoe.
Clan Douglas
Clan Douglas (Dubhghlas) is a powerful Scottish Lowland clan from Douglas Water, Lanarkshire, first recorded c. 1175-1199. Its Black (Earls of Douglas) and Red (Earls of Angus) branches differ in Y-DNA; the chiefship is dormant, with no chief recognized by the Lord Lyon.
Clan Fraser of Lovat
Clan Fraser of Lovat, a Gaelic Highland clan (MacShimidh) centred on Beauly, Inverness-shire, descending from Sir Simon Fraser; chiefs as Lords Lovat from about 1460, seat Beaufort Castle, motto Je Suis Prest.
Clan Gregor
Clan Gregor (Clan MacGregor, Mac Griogair), an ancient Highland Scottish clan of the Siol Alpin, motto 'S Rioghal mo Dhream; proscribed by James VI in 1603, restored 1774, famous for Rob Roy.
Clan Keith
Clan Keith, also known as the Keith family, is a Scottish clan from East Lothian, Aberdeenshire, and Caithness, long led by the hereditary Marischals of Scotland.
Clan Kerr
Clan Kerr, a Scottish Border riding clan of Roxburghshire with Ferniehirst and Cessford branches, motto Sero sed serio, chief the Marquess of Lothian, famed for the Scott feud and Culloden service.
Clan Leslie
Clan Leslie, a Lowland Scottish clan of Aberdeenshire, the Garioch and Fife; motto Grip Fast, three buckles arms; chiefs tied to Earls of Rothes; founder tradition Bartolf, Hungarian noble of 1067; notable member Alexander Leslie, Earl of Leven.
Clan Mackenzie
Clan Mackenzie (Clann Choinnich), a powerful Scottish Highland clan of Kintail and Ross, motto Cuidich 'n Righ; chiefs became Earls of Seaforth (1623) and Cromartie (1703); last Seaforth chief died 1815.
Clan MacLeod
Clan MacLeod, in Gaelic Clann Leóid, is a Scottish Highland clan of the Hebrides named for Leod, a Norse-Gael born about 1215, whose chiefs have held Dunvegan Castle on Skye for over 750 years.
Clan Stewart
Clan Stewart (Gaelic Stiubbard), Scottish clan of the High Stewards of Scotland, Breton-Norman origin under David I; royal house from Robert II (1371) to Queen Anne (1714), with Highland branches Appin, Atholl, and Balquhidder.
Clandestine cell system
Clandestine cell system: small semi-autonomous covert cells under centralized leadership, also called clandestine cellular networks; compartmentalized so one cell's capture does not expose others, used by insurgents, terrorists, and state stay-behind networks.
Clandestine operation
Clandestine operation: a secret operation that conceals the activity itself, unlike covert operations, which conceal the sponsor. Covers US legal definitions, Presidential Finding requirements, DOD doctrine, and SOE examples.
Clans of Baganda
Clans of Baganda (ebika bya Buganda): the over fifty patrilineal, exogamous totemic clans of Uganda's Buganda kingdom, tracing origins to Kintu, Kimera, Ssese, and Buddu migrations, each led by a mukulu w'ekika.
Clara (corporate spend-management fintech)
Clara is a Latin American corporate spend-management fintech founded in Mexico City in 2020, combining corporate credit cards, bill payment, and expense automation for companies in Mexico, Brazil, and Colombia.
Clara Amfo
Clara Amfo is a British broadcaster and TV presenter, former BBC Radio 1 host of The Official Chart Show, Live Lounge, and Future Sounds; also presenter of The One Show, Brit Awards 2022 and 2024 host, trustee of the Royal Academy of Arts.
Clara Lionel Foundation
Clara Lionel Foundation (CLF), Rihanna's 2012-founded 501(c)(3) grantmaker in New York, funds community-led climate resilience, health, arts, and women's entrepreneurship in the Caribbean, East Africa, and U.S. South, with over $100 million granted since 2012.
Clara Mattei
Clara Elisabetta Mattei, Italian economist at the University of Tulsa, author of The Capital Order (2022), which argues interwar austerity in Britain and Italy was class control, plus Escape from Capitalism (2026).
Clara Ritter
Clara Ritter, born Clara Göttle, was a German confectionery retailer who co-founded the Ritter Sport chocolate factory in 1912 and is credited with the idea for its trademark square chocolate bar, launched in 1932.
Clara Vegas
Clara Vegas (Clara Federica Vegas Goetz, born 2002 in Chacao) is a Venezuelan beauty queen, actress, and model, Miss Venezuela 2025 and daughter of Miss Venezuela 1990 Andreína Goetz; she represents Venezuela at Miss Universe 2026 in Puerto Rico.