| SURNAME | STATE | RESEARCHER | ||
| DABLE | England | N. McClellan | ||
| DABLE | IL | N. McClellan | ||
| DABLE | CA | N. McClellan | ||
| DAGGETT | IN | V. Williams | ||
| DANIEL | VA | P. Stowe | ||
| DANIELS | NY | B. Marsh | ||
| DARE | D. Marvin | |||
| DAVIDSON | PA | J. Cupp | ||
| DAVIES | TN | B. Merrill-Bailey | ||
| DAVIS | England | C. Stowe | ||
| DAVIS | MA | C. Stowe | ||
| DAVIS | CA | D. Marvin | ||
| DAVIS | MI | B. Marsh | ||
| DAVIS | WV | A. Reilly | ||
| DAVIS | VA | A. Reilly | ||
| DAVIS | OH | A. Reilly | ||
| DAVIS | VA | A. Reilly | ||
| DAVIS | KY | A. Reilly | ||
| DAVISON | CA | D. Marvin | ||
| DAWS / DAWES | England | N. McClellan | ||
| DAWS / DAWES | PA | N. McClellan | ||
| DAWS / DAWES | CA | N. McClellan | ||
| DE DUBLEER | France | A. Reilly | ||
| DEBLERE | Germany | A. Reilly | ||
| DEBLERE | England | A. Reilly | ||
| DeFOREST | NJ | A. Brunckhorst | ||
| DeFOREST | CT | A. Brunckhorst | ||
| DeFOREST | MA | A. Brunckhorst | ||
| DeFOREST | NY | A. Brunckhorst | ||
| DeHAYA | Scotland | J. Simonson | ||
| DeLAPP | NC | D. Young | ||
| DeLAPP | IL | D. Young | ||
| DeLYNE | Scotland | J. Simonson | ||
| DEMENT | TN | M. Lawson | ||
| DEMENT | IL | M. Lawson | ||
| DENNIS | MA | V. Williams | ||
| DENNIS | NJ | V. Williams | ||
| DENNISTON | England | D. Marvin | ||
| DENNISTON | WI | D. Marvin | ||
| DENNISTON | CA | D. Marvin | ||
| DENSON | VA | B. Moore | ||
| DENSON | NC | B. Moore | ||
| DENSON | TN | B. Moore | ||
| DENTON | NY | N. McClellan | ||
| DENTON | VA | N. McClellan | ||
| DENTON | IN | N. McClellan | ||
| DENTON | CA | N. McClellan | ||
| DENTON | TN | B. Rogers | ||
| DEVOE | NY | N. McClellan | ||
| DEVOE | MD | N. McClellan | ||
| DEVOE | KY | N. McClellan | ||
| DEVOE | IA | N. McClellan | ||
| DEVOE | CA | N. McClellan | ||
| DEW | NC | B. Rogers | ||
| DIBBER | IN | D. Young | ||
| DICE/DEISS/THEISS | PA | J. Cupp | ||
| DIETZ | Germany | A. Reilly | ||
| DIETZ | NC | A. Reilly | ||
| DIETZ | OH | A. Reilly | ||
| DIXON | IL | J. Lawson | ||
| DIXON | OH | J. Lawson | ||
| DODGE | MA | M. Lawson | ||
| DODGE | RI | M. Lawson | ||
| DODGE | MD | M. Lawson | ||
| DORMAN | MD | D. Young | ||
| DOUGALL / DUGAL / DOOGLE etc. | all US | D. Young | ||
| DOUGHERTY | VA | B. Rogers | ||
| DOWNING | Ireland | P. Stowe | ||
| DOWNING | Wales | P. Stowe | ||
| DOWNING | MD | P. Stowe | ||
| DOWNING | KY | P. Stowe | ||
| DOWNING | MO | P. Stowe | ||
| DOWNS | MD | A. Reilly | ||
| DOWNS | PA | A. Reilly | ||
| DOWNS | KY | A. Reilly | ||
| DRAPER | England | C. Stowe | ||
| DRAPER | MA | C. Stowe | ||
| DUBART | MD | P. Minch | ||
| DUBART | NC | P. Minch | ||
| DUBBER / DIBBER | Hanover | D. Young | ||
| DUBOIS | NY | D. Perkins | ||
| DUBOIS | France | D. Perkins | ||
| DUGLE | IN | D. Young | ||
| DUKE | WV | B. Merrill-Bailey | ||
| DUKE | NC | B. Merrill-Bailey | ||
| DULL | PA | A. Brunckhorst | ||
| DULL | IN | A. Brunckhorst | ||
| DUMAS | France | A. Reilly | ||
| DUMAS | VA | A. Reilly | ||
| DUNCAN | KY | N. McClellan | ||
| DUNCAN | IA | N. McClellan | ||
| DUNSMORE | CA | D. Marvin | ||
| DUNSMORE | NE | D. Marvin | ||
| DUNSMORE | England | D. Marvin | ||
| DUNSMORE | Scotland | D. Marvin | ||
| DUTTON | NY | M. Rollins (Kulstad) | ||
| DUTTON | VT | M. Rollins (Kulstad) | ||
| DUTTON | CT | M. Rollins (Kulstad) | ||
| DUVALL | MD | D. Frandsen | ||
| DUVALL | VA | D. Frandsen | ||
| DUVALL | KY | D. Frandsen | ||
| DYE | NJ | E. Rogers | ||
| DYE | KY | E. Rogers | ||
| D'YOU | LA | A. Brunckhorst | ||
| D'YOU | CA | A. Brunckhorst |