Almanzo and Laura Ingalls Wilder’s daughter Rose Wilder was both on December 5, 1886, so she is no longer alive. She passed away on October 30, 1968 when she was 81 years old. She passed away during the night, as she was about to leave on a three year world tour.
Rose married Claire Gillette Lane in 1909, taking his last name Lane. When they were divorced in 1918, she retained his last name.
Rose Wilder Lane did not have any children, so she has no living descendants. However, she informally adopted Roger Lea MacBride as her grandson, and upon Rose’s death, he retained all rights to the Wilder estate, including the Little House franchise. He has since passed away, leaving this inheritance to his adpoted daughter, Abigail MacBride Allen.