| ABBOTT -- Abbot, Abbott |
| ADAMS -- Adams |
| ADDERLY -- Adirly |
| AHERNE -- Ahern, Aherne, Aughern |
| ALLEN -- Allen, Alleyn, Allyn, McAllen |
| ALLMAN -- Allman |
| AMBROSE -- Ambrose |
| ARDGROOM -- Ardgroom |
| ARMSTRONG -- Armstrong |
| ARROLL -- Arroll |
| ARRUNDEL -- Arandal, Arrundel, Arundell |
| ARRUNDERN -- Arrundern |
| ARUNDEL -- Arundel |
| ARUNDELL -- Arndell |
| ASHE -- Ash, Ashe |
| ATKIN -- Atkins |
| ATKINS -- Atkin, Atkins |
| ATTRIDGE -- Atridge, Atteridge, Attridge |
| AUSTIN -- Austen, Austin |
|
| BAGLEY -- Bagley |
| BAILEY -- Bailey, Baily |
| BAKER -- Baker |
| BALDWIN -- Baldwin, Balwin |
| BALLINGER -- Ballinger |
| BAND -- Band |
| BANDON -- Bandon |
| BANTRY -- Bantry |
| BARKER -- Barker |
| BARNANE -- Barnane |
| BARNES -- Barnes |
| BARNETT -- Barnett |
| BARRETT -- Barret, Barrett, Barrette |
| BARRY -- Barry |
| BARRYVANE -- Barryvane |
| BARTER -- Barter |
| BASS -- Bafs, Bafse |
| BASTABLE -- Bastable |
| BATEMAN -- Bateman, Beatman |
| BATEMEN -- Bateman |
| BATT -- Batt |
| BATTEN -- Batten |
| BAWNY -- Bawn, Bawne, Bawny |
| BEAMISH -- Beamish |
| BEARD -- Beard |
| BEARLY -- Bearly |
| BEASLEY -- Beasley, Beasly |
| BEATTEN -- Batten, Beatten |
| BEATTY -- Beaty |
| BEECHER -- Becher, Beecher |
| BEECHINOR -- Bechener, Beechener, Beechinor, Bichinal |
| BEGLEY -- Begley |
| BENNETT -- Bennett |
| BERESFORD -- Beresford |
| BERKELEY -- Berkley |
| BERNARD -- Bernard |
| BERSDEN -- Bersden |
| BIGGS -- Biggs |
| BIRD -- Bird |
| BLACKBURN -- Blackburn |
| BLACKSTAFF -- Blackstaff |
| BLADE -- Blade |
| BLAIR -- Blair |
| BLAKE -- Blake |
| BLEAKNEY -- Bleakney |
| BLEAZBY -- Bleazby |
| BOGUE -- Boag, Boug |
| BOLAND -- Boland |
| BOUGH -- Bough |
| BOWEN -- Bauhane, Bohan, Bohane, Bouhan, Bouhane, Bowen, Bowhane |
| BOWIG -- Bowig |
| BOWLER -- Bowler |
| BOYDE -- Boyde |
| BOYER -- Boyer |
| BOYLAN -- Boylan |
| BOYLE -- Boyle |
| BRADFIELD -- Bradfield |
| BRADLEY -- Bradley, Bradly |
| BRADY -- Brady, Bready |
| BRANSFIELD -- Bransfield |
| BRAZIER -- Brazier |
| BREEN -- Breen |
| BRENNAN -- Brenan, Brenane, Breneen, Brennan, Brenneen, Brinane, Brineen, Brinneen |
| BRENNER -- Brinner |
| BREW -- Brew |
| BRIAR -- Braher, Brahir |
| BRICKLEY -- Breakly, Brickley, Brickly |
| BRIDE -- Bride |
| BRIEN -- Brian, Brien, Brion, Bryan, Bryen, O'Brian, O'Brien, Sauny |
| BRODERICK -- Broderick, Brodrick, Brooder |
| BRONAHAN -- Bronahan |
| BROOKES -- Brookes |
| BROSNAN -- Bresnahan |
| BROWNE -- Brown, Browne |
| BRUCE -- Bruce |
| BRYANT -- Bryant |
| BUCK -- Buck |
| BUCKLEY -- Buckley, Buckly |
| BUEE -- Buee, Bwee |
| BUFINAN -- Bufinan |
| BULLIN -- Bullin |
| BULLMAN -- Bullman |
| BURCHELL -- Burchel, Burchell, Burchill |
| BURCHILL -- Burchill |
| BURKE -- Baurke, Bourke, Burk, Burke |
| BURNS -- Burne, Burnes, Burns, Byrne, Byrns |
| BURY -- Bury |
| BUSAN -- Boozan, Boozane |
| BUSHE -- Bushe |
| BUSTEED -- Bustead, Busteed |
| BUTLER -- Butler |
| BUTTIMER -- Bottomer, Buttimer, Buttimere, Buttomer, Buttomere |
|
| CADOGAN -- Cadagan, Cadagane, Cadahane, Cadegan, Cadigan, Cadogan, Cathegane, Keadagane, Keddigan, Kedigan, Keodagan |
| CADY -- Cady, Keady |
| CAFNEY -- Cafney |
| CAHILL -- Cahell, Cahill |
| CALLAGHAN -- Calaghan, Calahan, Calahane, Calihane, Callaghan, Callahan, Callihan, O'Callaghan, O'Callahan |
| CALLAHAN -- Callaghan, Callahan |
| CALLINAN -- Calanan, Callanan, Callanane, Callnan, Calnan, Calnane, Clinane |
| CALOGH -- Calogh |
| CAMBRIDGE -- Cambridge |
| CAMIERE -- Camiere |
| CANNIFF -- Cannif, Canniff, Cannive |
| CANNON -- Cannan |
| CANTILLAN -- Cantillan |
| CANTTON -- Cantton |
| CANTY -- Canty, Counter, County |
| CARBERY -- Carbery |
| CAREY -- Carey, Cary, Keary |
| CARLETON -- Carleton, Carlton |
| CARNANE -- Carnane |
| CARROLL -- Carrol, Carroll, Carrolle |
| CARTER -- Carter |
| CASEY -- Cacey, Casey, Casy |
| CASHIN -- Cashin |
| CASHMAN -- Cashman |
| CATES -- Cates |
| CAVERLY -- Calverly, Cavelry, Caverly |
| CHAMBERLAIN -- Chamberlin |
| CHAMBERS -- Chambers |
| CHANTRY -- Chantry |
| CHARD -- Chard |
| CHILD -- Child |
| CHIPPS -- Chipps |
| CLANCY -- Clancy, Clansey, Closey |
| CLARKE -- Clark, Clarke |
| CLASHA -- Clasha, Closha |
| CLEARY -- Clary, Cleary |
| CLERK -- Clerk, Clerke |
| CLIFFORD -- Clifford |
| CLUVANE -- Clovane, Cluvane, Cluvany |
| COAKLEY -- Coakley, Coakly, Coalkly, Cockley, Cokely, Cokily, Coukly, Cuckly, Kehaly, Kehelly, Kehely, Kehily |
| COCKLEY -- Cockley |
| CODY -- Coady, Cody |
| COFFEY -- Coffee, Coffey |
| COGAN -- Cogan, Coggan |
| COHNAGH -- Cohna, Cohnagh, Conna |
| COLE -- Coal, Cole |
| COLEHURST -- Colehurst, Colthurst |
| COLEMAN -- Coalman, Coleman, Collom, Collum, Cullim |
| COLLACK -- Collack |
| COLLINGS -- Collings |
| COLLINS -- Collins |
| COLTON -- Colton |
| COMMON -- Common |
| CONDON -- Condon, Condron |
| CONLON -- Clinane |
| CONNELL -- Connel, Connele, Connell, O'Connel |
| CONNOLLY -- Conely, Connelly, Connely, Connoley, Connolly, Connoly, Conolly, Conoly |
| CONNOR -- Conner, Connor, Connors, O'Conner, O'Connor |
| CONROY -- Conree, Conry, Cunrey |
| COOKE -- Cook, Cooke |
| COONEY -- Cooney |
| COONOOSIG -- Coonoosig |
| COOPER -- Cooper |
| COPPINGER -- Copinger, Coppinger |
| COPPITHORNE -- Copithorn, Copithorne, Coppithorne |
| CORCORAN -- Corcoran, Corkeran, Corkoran, Corkran |
| CORKERY -- Corkerra, Corkerry, Corkery, Corkirra |
| CORREGAN -- Corregan |
| COSS -- Cofs |
| COSTEGAN -- Costegan, Costigan |
| COSTELLO -- Coftollo, Costello, Costelloe |
| COSTEN -- Costin |
| COSTIGAN -- Costigan, Costrigan |
| COTTER -- Cotter |
| COTTERELL -- Cotterell |
| COTTRELL -- Cottrell |
| COUGHLAN -- Coghalan, Coghlan, Coghlane, Coghlin, Coglan, Coughlan, Coughlane, Couglan, Couglhan |
| COURCEY -- Courcey, Coursey |
| COURNENOUGH -- Cournenough |
| COURTNEY -- Courtenay, Courtney |
| COVENEY -- Covenay, Coveney, Coveny, Coweny |
| COVING -- Coving |
| COWHIG -- Cowhig, Cowig |
| COWNEY -- Couney, Cowney |
| COX -- Cox |
| CRAIG -- Craig |
| CREANE -- Crean, Creane, Krane |
| CREED -- Creed |
| CREEDON -- Credan, Creedan, Creedon |
| CRIMEEN -- Creameen, Creemin, Cremeen, Cremin, Crimeen, Crimmeen, Crimmin |
| CRIPPS -- Cripps |
| CRISPE -- Crispe |
| CRISPIE -- Crispy |
| CROFTS -- Crofts |
| CROKER -- Croker |
| CRONE -- Croan, Crone |
| CRONIN -- Cronan, Croneen, Cronin, Dronin |
| CROOK -- Crook |
| CROSS -- Cross |
| CROSTON -- Crostean, Crosten, Crostin, Croston |
| CROUGH -- Croug |
| CROWE -- Crowe |
| CROWLEY -- Crawley, Crawly, Croly, Crouly, Crowley, Crowly, O'Crowley |
| CRUGG -- Crugg |
| CRUISE -- Cruise |
| CUE -- Cue, Kew, McKue |
| CULHANE -- Cahalane, Calahane, Cauhilane, Cohalane, Cohallane, Coholane |
| CULLEN -- Caulan |
| CULLINANE -- Cullinane, Culnane, Quillinan |
| CUMMINS -- Common, Cumin, Cummins |
| CUNIACH -- Cuniach |
| CUNNINGHAM -- Conningham, Cunningham |
| CURRAN -- Curran |
| CURTIN -- Curtin |
| CUSACK -- Cusack |
| CUSHEN -- Casheen, Cushen, Cushin, Cushion |
| CUTHBERT -- Cutbert, Cuthbert |
| CUTTLE -- Cuttle |
|