| M-1 | Ma, Hua and Noi Tran | M-1 |
| M-1 | Mace, Larry and Robin (Koeneman) | M-1 |
| M-2 | Mace, Larry and Robin (Koeneman) cont. | M-2 |
| M-2 | Magelssen, Finn and Catherina (Magelssen) | M-2 |
| M-2 | Magelssen, Johannes and Dorothy (Johnsrud) | M-2 |
| M-2 | Mansfield, Dan and Ann (Wise) | M-2 |
| M-3 | Mansfield, Dan and Ann (Wise) cont. | M-3 |
| M-3 | Markestad, Charles | M-3 |
| M-3 | Marsh, Benjamin and Bertha (Tobiason) | M-3 |
| M-4 | Marsh, Benjamin and Bertha (Tobiason) cont. | M-4 |
| M-4 | Marsh, Carl O. and Margaret (Backhaus) | M-4 |
| M-4 | Marsh, Leland and Sandra (Puls) | M-4 |
| M-4 | Mashek, James and Rose (Hejlik) | M-4 |
| M-4 | Masters, Lyle and Sena (Baker) | M-4 |
| M-5 | Masters, Lyle and Sena (Baker) cont. | M-5 |
| M-5 | Matter, John and Suzanne (Noecker) | M-5 |
| M-6 | Matter, John and Suzanne (Noecker) cont. | M-6 |
| M-6 | Matter, Stanley and Leila (Young) | M-6 |
| M-6 | McCarger Family, Many Roads to Iowa, Part I | M-6 |
| M-7 | McCarger Family, Many Roads to Iowa, Part I cont. | M-7 |
| M-7 | McConnell, James and Rose(a) (McLaughlin) | M-7 |
| M-7 | McKay, Brothers, Amos Judson and Cyrus | M-7 |
| M-8 | McKay, Brothers, Amos Judson and Cyrus cont. | M-8 |
| M-8 | McKay, James | M-8 |
| M-9 | McKay, James cont. | M-9 |
| M-9 | McLain, William and Lovina (Bolger) | M-9 |
| M-9 | McManus, John (Family) | M-9 |
| M-10 | McManus, John (Family) cont. | M-10 |
| M-10 | McMartin, Daniel and Julia S. (Brush) | M-10 |
| M-11 | McMartin, Daniel and Julia S. (Brush) cont. | M-11 |
| M-11 | McMartin, Frank and Martha (Lewis) | M-11 |
| M-11 | McMartin, John and Frances (Stiles) | M-11 |
| M-12 | Meikle, Louis and Dora (Miller) | M-12 |
| M-12 | Melaas, Hans O. and Maren (Haga) and Marie (Bakken) | M-12 |
| M-12 | Melaas, Ole Gulbrandson and Elene (Heyer) | M-12 |
| M-13 | Melaas, Ole Gulbrandson and Elene (Heyer) cont. | M-13 |
| M-13 | Mestad, Joseph and Nettie (Gjere) | M-13 |
| M-13 | Meyer, August C. and Lena (Hulverson) | M-13 |
| M-14 | Meyer, August C. and Lena (Hulverson) cont. | M-14 |
| M-14 | Meyer, George F. and Luella (Lauer) | M-14 |
| M-14 | Meyer, Harold and Mabel (Blumhagen) and Elsie (Blumhagen) | M-14 |
| M-15 | Meyer, Harold and Mabel (Blumhagen) and Elsie (Blumhagen) cont. | M-15 |
| M-15 | Meyer, Henry and Elizabeth (Senholz) | M-15 |
| M-15 | Meyer-Huber-Schissel, Families | M-15 |
| M-16 | Meyer-Huber-Schissel, Families cont. | M-16 |
| M-17 | Meyer-Huber-Schissel, Families cont. cont. | M-17 |
| M-17 | Meyer, Keith and Brenda (Bietiker) | M-17 |
| M-17 | Meyer, Kenneth F. and Rebecca (Reierson) | M-17 |
| M-17 | Meyer, Kenneth V. and Nancy (Billings) | M-17 |
| M-18 | Meyer, Kenneth V. and Nancy (Billings) cont. | M-18 |
| M-18 | Meyer, Orville V. and Ora Gene (Oestmann) | M-18 |
| M-18 | Meyer, Peter and Alma (Hagemann) | M-18 |
| M-19 | Meyer, Peter and Alma (Hagemann) cont. | M-19 |
| M-19 | Meyer, William and Katherine (Schroeder) | M-19 |
| M-19 | Mikelson, Knut and Anna (Gulickson) | M-19 |
| M-20 | Mikelson, Knut and Anna (Gulickson) cont. | M-20 |
| M-20 | Mikota, Frantisek and Marie (Shileny) | M-20 |
| M-21 | Mikota, Frantisek and Marie (Shileny) cont. | M-21 |
| M-21 | Mikota, Lawrence and Angela (Kriener) | M-21 |
| M-21 | Miller, Frank and Esther (Stephens) | M-21 |
| M-22 | Miller, Frank and Esther (Stephens) cont. | M-22 |
| M-22 | Miller, Roy and Edna (Miles) | M-22 |
| M-22 | Moe, Ole O. and Aase (Monson) | M-22 |
| M-23 | Moe, Ole O. and Aase (Monson) cont. | M-23 |
| M-23 | Moellers, Frank and Christina (Timp) | M-23 |
| M-23 | Moen, Amund and Guri (Kjorlien) | M-23 |
| M-24 | Moen, Amund and Guri (Kjorlien) cont. | M-24 |
| M-24 | Moen, August and Marie (Bakke) | M-24 |
| M-25 | Moen, James and Sharon (Baker) | M-25 |
| M-25 | Moen, Johannes and Synneve (Dybevik) | M-25 |
| M-26 | Moen, Johannes and Synneve (Dybevik) cont. | M-26 |
| M-26 | Moen, John and Christina (Lotvedt) | M-26 |
| M-27 | Moen, John and Christina (Lotvedt) cont. | M-27 |
| M-27 | Moen, Kenneth and Virgina (Barth) | M-27 |
| M-28 | Moen, Kenneth and Virgina (Barth) cont. | M-28 |
| M-28 | Moen, Larry and Lynn (Reese) | M-28 |
| M-28 | Moen, Richard and Sharon (Brandt) | M-28 |
| M-29 | Moen, Richard and Sharon (Brandt) cont. | M-29 |
| M-29 | Monroe, Edwinn and Virginia (Eberling) | M-29 |
| M-29 | Monroe, Henry Jr. and Lorraine (Lauer) | M-29 |
| M-29 | Monroe, James and Marjorie (Jacobson) | M-29 |
| M-29 | Monroe, Lloyd and Betty (Jacobson) | M-29 |
| M-30 | Monroe, Lloyd and Betty (Jacobson) cont. | M-30 |
| M-30 | Montgomery, Barbara Louise (Hook) | M-30 |
| M-31 | Montgomery, Barbara Louise (Hook) cont. | M-31 |
| M-31 | Montgomery Children, Fifth Generation | M-31 |
| M-32 | Montgomery Children, Fifth Generation cont. | M-32 |
| M-32 | Montgomery, Henry "Harry" Biggs | M-32 |
| M-33 | Montgomery, Henry "Harry" Biggs cont. | M-33 |
| M-33 | Montgomery, Henry Irving | M-33 |
| M-34 | Montgomery, Henry Irving cont. | M-34 |
| M-34 | Montgomery, Jehiel Halsey and Emilly (Biggs) | M-34 |
| M-34 | Montgomery, Martha Grace (Wilkinson) | M-34 |
| M-35 | Montgomery, Martha Grace (Wilkinson) cont. | M-35 |
| M-35 | Montgomery, Michael Henry and Sarah (Richardson) | M-35 |
| M-36 | Montgomery, Michael Henry and Sarah (Richardson) cont. | M-36 |
| M-36 | Moore, Archibald and Anne (Orr) | M-36 |
| M-36 | Moore, Charles O. and Gustava (Erickson) | M-36 |
| M-37 | Moore, Charles O. and Gustava (Erickson) cont. | M-37 |
| M-37 | Moore, Donald E. and Ilene (Meyer) | M-37 |
| M-37 | Moore, George F. and Anna Maria (Erickson) | M-37 |
| M-38 | Moore, George F. and Anna Maria (Erickson) cont. | M-38 |
| M-38 | Moore, Samuel J. and Elizabeth (Williams) | M-38 |
| M-38 | Mosbo, Edward and Esther (Thorson) | M-38 |
| M-39 | Mosbo, Edward and Esther (Thorson) cont. | M-39 |
| M-39 | Mosbo, Edward Paul and Vivian (Anderson) | M-39 |
| M-39 | Mosbo, Erik and Mariellen (Olson) | M-39 |
| M-40 | Mosbo, Erik and Mariellen (Olson) cont. | M-40 |
| M-40 | Mosbo, Rolf and Valerie (Haroldson) | M-40 |
| M-40 | Moser, Daniel and Mary (Reicks) | M-40 |
| M-41 | Moser, Daniel and Mary (Reicks) cont. | M-41 |
| M-41 | Mundt, Craig and Linda (Martie) | M-41 |
| M-41 | Mundt, Leslie John and Leora (Bloxham) | M-41 |
| M-42 | Mundt, Leslie John and Leora (Bloxham) cont. | M-42 |
| M-42 | Murphy, William and Ruby (Powers) | M-42 |
| M-42 | Musser, David A. and Bertha (Anderson) | M-42 |
| M-43 | Musser, David A. and Bertha (Anderson) cont. | M-43 |
| M-44 | Musser, David A. and Bertha (Anderson) cont. cont. | M-44 |
| M-44 | Musser, David H. and Delia (Brandt) | M-44 |
| M-45 | Musser, David H. and Delia (Brandt) cont. | M-45 |
| M-45 | Musser, Michael and Elizabeth (Fye) | M-45 |
| M-45 | Musser, Wlliard and Ilyn (Ingvalson) | M-45 |
| M-46 | Musser, Wlliard and Ilyn (Ingvalson) cont. | M-46 |
| M-47 | Musser, William | M-47 |
| M-47 | Musser, William H. and Emelia (Blegen) | M-47 |
| M-48 | Musser, William H. and Emelia (Blegen) cont. | M-48 |
| M-49 | Musser, William H. and Emelia (Blegen) cont. cont. | M-49 |
| M-49 | Myrah, Andrew P. and Caroline (Erickson) | M-49 |
| M-49 | Myrah, Gustav P. and Olive (Harper) | M-49 |
| M-50 | Myrah, Gustav P. and Olive (Harper) cont. | M-50 |
| M-50 | Myrah, Helge and Kjersti (Olson) | M-50 |
| M-50 | Myrah, Ole and Turi and Ingri (Helgesdtr) | M-50 |
| M-51 | Myrah, Ole and Turi and Ingri (Helgesdtr) cont. | M-51 |
| M-51 | Myren, Halvor and Orrilie (Clement) and Maud (Van Way) (Peck) | M-51 |
| M-52 | Myren, Halvor and Orrilie (Clement) and Maud (Van Way) (Peck) cont. | M-52 |
| | Surnames starting with N | |
