Fujiwara no Nagara
, also known as Fujiwara no Nagayoshi, was a Japanese statesman, courtier and politician of the early Heian period.
He was the grandfather of Emperor Yōzei.
Lyon Cohen
Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist.
He was the grandfather of singer/ poet Leonard Cohen.
John Westley
Rev. John Westley( 1636 – 78) was an English nonconformist minister.
He was the grandfather of John Wesley( founder of Methodism).
Almanzo Wilder
Almanzo James Wilder( February 13, 1857 – October 23, 1949) was the husband of Laura Ingalls Wilder and the father of Rose Wilder Lane, both noted authors.
Rose Wilder Lane
Rose Wilder Lane (December 5, 1886 – October 30, 1968) was an American journalist, travel writer, novelist, political theorist and daughter of American writer Laura Ingalls Wilder.
Along with two other female writers, Ayn Rand and Isabel Paterson, Lane is noted as one of the founders of the American libertarian movement.
Kaya Alp
Kaya Alp was, according to Ottoman tradition, the son of Kızıl Buğa and the father of Suleyman Shah, who was, in turn, the grandfather of Ertuğrul, and the great grandfather of the Ottoman Empire founder, Osman I.
Laura Ingalls Wilder
Laura Elizabeth Ingalls Wilder (February 7, 1867 – February 10, 1957) was an American writer known for the "Little House on the Prairie" series of children's books, published between 1932 and 1943, which were based on her childhood in a settler and pioneer family.
During the 1970s and early 1980s, the television series "Little House on the Prairie" was loosely based on the Little House books, and starred Melissa Gilbert as Laura and Michael Landon as her father, Charles Ingalls.
Prithvipati Shah
Prithvipati Shah( ?–1716) was the king of the Gorkha Kingdom in the Indian subcontinent, present- day Nepal.
He was the grandfather of Nara Bhupal Shah.
Abd al-Muttalib
Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.
Guillaume Wittouck
Guillaume Wittouck( 1749- 1829) was a Belgian lawyer and High Magistrate.
He was the Grandfather of industrialist Paul Wittouck.

Question: Who is the maternal grandfather of Rose Wilder Lane?
Answer: Charles Ingalls