FamilySearch.org, Lake Prairie Twp., Marion, IA, 1850
B. Netherlands, Den OTTER, Dirk, 44
VINK, Maria, 39
VERDUGT, Lena A., 17, & Cornelis, 9
Den OTTER, Aart, 7
B. Iowa, Leentje [f], 2 (check the actual census because this is hard to read).

Marion Co., IA, 1870, OTTER
Aart den, 27; Mary, 23; Dert, 3; Jacob, 1; Jane, 1 mo.

Lake Prairie Twp., Marion Co., IA, 1880, indexed OTTER
Dirk DEN OTTER, 75, & Mary, 69, they & parents b. Holland
Grandson Dirk, 4, b. IA.

Polk, Marion, IA, 1885, DEOTTER, Art, 41; Venmarl, 37; Dirk, 18; Jacob, 16; Peter, 14; Arie, 12; Mary, 10; John, 8; Maggie, 6; William, 4; Dreka, 2.

SD, 1915, DEN OTTER, Jacob, 46, b. Iowa, parents b. Holland, ancestry "Dutch Norwegian," m. 1889, Gertrud Van Den Martin, to SD 1909, Methodist Episcopal.

Walworth Co., SD, 1920, DENOTTER, Jacob, 51, b. IA, parents b. Holland, wf. Gertrude, 49, she & parents b. Holland; Gertrude J., 12, b. Iowa; Margret, 7, b. SD.

In 1925 & 1935, Jacob said he had married in 1890, G. VANDERMORTEN.

Selby, Walworth, SD, 1945, Jacob DEN OTTER, 76, b. IA, m. 1890.

Online file by R. A. STEENHOEK: Aart den OTTER m. Leentje HOOGWERFF & had Dirk, b. 21 Aug. 1805, Nieuwland, Zuid-Holland, who m. 9/29 Je. 1841, Maria VINK, dau/o Grietje SPRONG & Cornelis Faszoon VINK. Maria had m1. 26 Apr. 1832, Leerdam, Walig Jansse VERDUGT, who d. 5 Aug. 1840, Leerdam.

Dirk & Maria had
Aart, b. 4 Jan. 1843, Hoogblokland, Zuid-Holland
Leentje, b. 14 Apr. 1845
Dirk
Pieter, b. ca. 1853, Pella, IA.

Were you able to connect the other line with Gerrit Arijsz den Otter, ged. 29 Je. 1794, Barendrecht?

Which Dirk was your grandfather?

--not my family