- Culpepper / Culpeper
- Includes family history, with extensive genealogies, archives of legal and historical documents, photo gallery and more. Clans of Ireland, The
- Features clan lists, famous Irish people, related links, and more.- Croy
 - Carson (4)
- Chadeayne
- History, pictures, news, and links. Clan Carson Website
- Offers information on the family in Northern Ireland and Scotland. Also includes genealogies for the Haining and Cuthbert families.- Caley
- Traces the family history. - Cartwright
- George Cartwright, son Cyrus, b. 1833 and descendants. Western PA origin. Surnames: Bowen, Cameron, Cox, Hager, Keller, Mueller, Mullinex, Mumma, Nielsen, Porter, Powell, Womer, and more. Cleugh
- Also genealogy of Hardings and Hollenders.- Coker
- Offers Mississippi and Texas Coker and related families genealogy information. - Crispell
- Includes photos and information about the reconstructed French Church on Huguenot Street. - Crundwell
- Includes personal info as well as history of the Crundwell family as well as the Madej, Horvath, Schemine, Silva, and Sliwinski surnames. - Cameron
 - Cassidy
- Information on the surname and Irish clans. Carey
- Provides ancestral family biographies, portrait gallery, charts, and walk-through index.- Curtis (1)
- Curtin
- Resource to all interested in the surname Curtin, which includes variations such as Curtain, Curtan, Curtayne, Curten, McCurten, Curties, Curtin, MacCurtin, and others. - Coyston
- Includes information on the Sullivan and Coyston families. - Croatian Genealogy
- Dedicated to researching family roots in Dalmatia (Croatia), Bosnia, and Hercegovina. - Crutchley (1)
Crutchley Family
 Cormican
- Trace down your ancestors from America to Ireland.- Carrillo
- Contains history of the Carrillo Family of Sonoma County, including photos and a list of living descendants. - Christmas/Beattie
- Includes ancestral charts, photographs, books, and articles. - Clark (4)
- Cochrane
- Official site for North America with approval of the 15th Earl of Dundonald. - Chitty
- Also including genealogies of the Gormanous and Bynog surnames. - Cogswell
- Dedicated to preserving the history of the Cogswell family. - Corfman
 - Carman (1)
- Churchyard
- Online version of Our Family Museum by James Nohl Churchyard, featuring Churchyard, Orr, and collateral lines in England, Quebec, France, Germany, and the United States. - Conover
- Surnames include: Conover, Van Kouwenhoven, Vanderveer, Ferdon, Kipp, Warren, Billington, Swift, Knapp, Kingsley, and Sabin. Coppin
- Spans eleven generations descending from John Coppin and Abigail of Cardinham.- Cardinalli
- Also spelled Cardinale. - Clann Horan World Headquarters
- A meeting place for all Horans. - Coughlan
- Goal of this page is to bring Coughlans worldwide together for the purpose of developing a family tree spanning 1200 AD to the present. - Coffey
- With Virginia roots. Clode
- Tracing the family of Edgar Horace Clode from 1868 to the present.- Cutchin
 - Cabell
- Genealogical association dedicated to the Cabell family. Creed
- Also Baker, Hartas, and Hedley.- Crowl
- Home of the Crowl Connections, a newsletter and family association dedicated to the research of the Crowl name and its many spellings. - Cross-Lopez
- Also Arguello, Cross, Faden, Lopez, Parvish, Russell, and Urcuyo. Traces the history of the family from England to Nicaragua. - Cullen (1)
Caddy
- Also Thomas. Offers searchable database. Comben
- Originates from Weymouth/Portland in Dorset, England.- Cyphert
- Family history and directory, information on the name, links, and more. - Carlton (1)
- Culpin
- Collection of resources for researching family history in the U.K. - Coop / Hamson / Geller
- Including the surnames: Hearn, Applebaum, Rich, Teren, and Siegle families. - Carnley
- Also spelled Carnline and Cantaline. Colloff
- Also Collef, Kohlhoff, Culiffe, Coloff, Collof, and more.- Curran
 - Campbell (1)
- Coker / Cocker
- Surnames also include Plant, Price, Sulsona and Edge. - Casey (1)
Chidgey
- History of the family name.- Capecchi
- Joseph A Capecchi emmigrated from Florence, Italy to St Paul MN in 1906. - Connelly
- Genealogical history of the Connelly, Pelphrey, Fairchild, and Blanton families. - Crayne / Grable
- Other surnames include: Bertalan, Peto, Palfi, Liska, Bayuz, Crayne, Throckmorton, Guiher, Gohn, and Simonton. Callery
- Features interpretations of the name Callery and looks at where Callerys came from and where they live now. Includes historical information and family poetry.- Canova
- Documenting fifteen generations of the family from its origins in Spain to its spread throughout the United States. Features photographs, family tree, and more. - Collett
- Includes Barnett, Corey, Emery, Ruff, and Vines. - Cottingham
 - Cumberbatch
- Investigates the origins, meaning, distribution, and study of the surname, Cumberbatch, and numerous variant spellings. - Cinquini
- Follow the branches of our family tree. There may be a link to you. - Cristini
- Tracing the family of Guiliano Cristini and Filomena Tatangelo from 1851 to the present. - Cramer
- Including surnames: Kramer, Matter, Motter, Schelling, Shilling, Smeltzer, Lebo and Ritzman. - Cook (1)
- Cox (2)
- Coates-Pellegrinetti
- Irish family's web site with historical photos, family trees, and extensive genealogy. - Corbett
- Also Costigan, Furey, Kennedy, O'Keefe, Hawco, Rice, Ballantine, Scofield and Sherwood. - Cregan
- Includes surname history, researchers' database, family history and photo gallery. Variant spellings include Creegan and Craigen. - Churchman
- Genealogy dating from 1682. - Chrisman Family
 - Christensen / Carlisle / Andersen
- Surnames include, among others: Knox, Christiansen, Emmett, Lay, Meyer, Young, Walker, Harrison, Matthews, Hornsby, Feagin and Miller. - Cornwell (1)
Cairncross
- Contains letters, family trees, and information dating back to 1770.- Carstarphen
- Carstarphen, Corstorphin, Carstarphin; name derived from a village in Midlothian County, Scotland. - Calicut / Spaargaren
- Surnames: Hodel, Calicott, Palethorpe, Silverthorne, Spencer, Bass, Farmer and Dodd. - Chinn
- Tracing the Chinn family in Hinton St. Mary, Dorset, England, and the Buchanan family in Omagh, Tyrone, Ireland. Craddock Families of England and Wales
 - Crossland and Crosslin
- Genealogical research of Crossland and phonetically similar spellings. - Clouser
- Collecting and sharing information on the Clouser surname and variants including Clauser, Clowser, Klauser, and Klouser. - Carstairs
- Other names include: Baldie, Cunningham, Pearson, and Watt. - Copeland (2)
- Calladine / Kruck / Huwe
- Includes surnames Webb, Uter, Stach, Reinert, and Hirsch. - Carnahan / Carnaghan
- Family history from present back to 1765. - Cooper
- Also includes the surnames Camburn, McClemens, Wright, Osenton, Daniels, and Newham. - Crabtree
- Related surnames include: Tracy, Arehart, Farris, Pierce, Apgar, Hunter, DePriest, Bennett, Fox, Davis, and many more. - Cruit
- Including the variants Cruitt, Cruet, Cruett, Cruite, Cruitte, Cruete, Cruette, Crewit, Crewitt, Crewite, Crewitte, Crewet, Crewett, Crewete, and Crewette. - Cullinan / Cullinane

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