D
| Surname | First Name | County | Page |
| Dagett | GL | Demoine | 62 |
| Dalby | John | Dubuque | 28 |
| Daley | Hugh | Dubuque | 29 |
| Daneil | Williamson | Demoine | 90 |
| Daney | Jonas | Demoine | 70 |
| Dapraw | N | Dubuque | 13 |
| Darbyshire | John | Demoine | 84 |
| Davenport | Adrian H. | Demoine | 90 |
| Davenport | Col. | Dubuque | 37 |
| Davenport | Otho | Demoine | 90 |
| David | Claybourn | Dubuque | 630 |
| Davidson | James | Demoine | 91 |
| Davis | Beden | Demoine | 91 |
| Davis | BF | Dubuque | 19 |
| Davis | Charles | Demoine | 70 |
| Davis | David L. | Demoine | 82 |
| Davis | Faro | Dubuque | 26 |
| Davis | HA | Demoine | 61 |
| Davis | James | Demoine | 65 |
| Davis | James | Demoine | 89 |
| Davis | John | Dubuque | 19 |
| Davis | John | Demoine | 91 |
| Davis | Mrs. E. | Dubuque | 26 |
| Davis | Richard B. | Demoine | 81 |
| Davis | T. | Dubuque | 39 |
| Davis | Theodorus | Demoine | 91 |
| Davison | John | Demoine | 67 |
| Davison | Richard | Dubuque | 31 |
| Dawson | Jonathan | Dubuque | 36 |
| Debuts | Henry | Demoine | 60 |
| Delany | John | Dubuque | 11 |
| Delany | Thomas | Dubuque | 11 |
| Delashmutt | Butler B. | Demoine | 85 |
| Delashmutt | Elias N. | Demoine | 85 |
| Delong | Nicholas | Dubuque | 34 |
| Demint | William | Dubuque | 28 |
| Denison | Peter | Dubuque | 14 |
| Denston | Thomas | Dubuque | 16 |
| Derben | Joseph | Demoine | 78 |
| Desair | F. | Dubuque | 78 |
| Deshenn | Mr. | Dubuque | 12 |
| Desonia | Baptiste | Dubuque | 28 |
| Dessellos | Lewis | Dubuque | 26 |
| Dews | Nathaniel | Demoine | 70 |
| Dexter | J. | Dubuque | 19 |
| Dias | D. | Dubuque | 38 |
| Dickey | Thomas | Demoine | 62 |
| Dickins | Edward | Dubuque | 32 |
| Dickinson | Matilda | Dubuque | 12 |
| Dickson | Alexander | Dubuque | 24 |
| Dickson | and Millsap | Dubuque | 30 |
| Dickson | Rolley | Dubuque | 30 |
| Dillan | Calvin | Demoine | 64 |
| Dillon | Lyman | Dubuque | 22 |
| Divin | AJ | Dubuque | 27 |
| Dodd | William | Demoine | 77 |
| Dodd | William | Demoine | 67 |
| Dodge | Philo | Demoine | 63 |
| Dolahite | Jackson | Demoine | 85 |
| Dolard | John | Dubuque | 28 |
| Doling | J. | Dubuque | 41 |
| Donahoe | M. | Dubuque | 45 |
| Donnell | Jonathan | Demoine | 93 |
| Doolittle | Amri | Demoine | 91 |
| Doom | AG | Demoine | 51 |
| Dorcas | J | Dubuque | 45 |
| Dorcas | William | Dubuque | 33 |
| Dotson | William | Demoine | 80 |
| Dougherty | Allin | Dubuque | 29 |
| Dougherty | Burnard | Dubuque | 29 |
| Dougherty | EC | Dubuque | 45 |
| Dougherty | John | Dubuque | 23 |
| Dover | Abraham | Demoine | 75 |
| Dover | Solomon | Demoine | 75 |
| Dowling | J | Dubuque | 38 |
| Dowling | John | Dubuque | 45 |
| Downs | Daniel | Dubuque | 16 |
| Draggoo | John | Demoine | 64 |
| Drake | JA | Demoine | 63 |
| Drake | Peter | Dubuque | 17 |
| Draughpra | Z | Dubuque | 17 |
| Driskall | Angelo | Demoine | 81 |
| Driskall | David | Demoine | 58 |
| Driskall | Miles | Demoine | 60 |
| Driskall | Rolla | Demoine | 81 |
| Drulard | Simeon | Demoine | 77 |
| Dubear | B. | Dubuque | 21 |
| Dudley | Nehemiah | Dubuque | 26 |
| Dudley | William E. | Dubuque | 38 |
| Duel | Silas | Dubuque | 33 |
| Duggan | Daniel | Dubuque | 17 |
| Duglass | Joseph | Demoine | 67 |
| Duham | Amos | Demoine | 81 |
| Duham | Amos | Demoine | 52 |
| Duke | Charles | Demoine | 52 |
| Duke | Charles | Demoine | 87 |
| Duke | David | Demoine | 87 |
| Duke | John | Demoine | 77 |
| Duke | RD | Dubuque | 23 |
| Dun | Patrick | Dubuque | 35 |
| Dunbar | William | Demoine | 88 |
| Duncan | A | Dubuque | 23 |
| Duncan | Coleman | Dubuque | 44 |
| Duncan | John | Dubuque | 23 |
| Dunden | Thomas | Dubuque | 31 |
| Dunham | Elijah | Demoine | 52 |
| Dunham | Elijah | Demoine | 81 |
| Dunman | JH | Dubuque | 14 |
| Dunn | Charles | Dubuque | 44 |
| Dunn | Richard | Demoine | 68 |
| Dunningham | John | Demoine | 91 |
| Dunnwidy | JP | Demoine | 68 |
| Duplicie | Lewis | Dubuque | 19 |
| Duplicie | Z | Dubuque | 12 |
| Dupont | william | Demoine | 78 |
| Duprancy | Mr. | Dubuque | 33 |
| Durham | Samuel | Demoine | 53 |
| Dusett | N. | Dubuque | 40 |
| Dutell | P | Dubuque | 39 |
| Duval | Daniel | Demoine | 81 |
| Dyle | Edward | Demoine | 63 |