Question: Who is the paternal grandfather of Naja Rosa?

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.
Henry Bryant (naturalist)
Henry Bryant( May 12, 1820 – February 2, 1867) was an American physician and naturalist.
He was the grandfather of Henry Bryant Bigelow.
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).
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.
Naja Rosa
Naja Rosa Koppel (born 1980) is a Danish singer-songwriter.
She is the daughter of Savage Rose founders Annisette and Thomas Koppel and raised in Denmark and USA.
She debuted on 16 August 2010 with her album "Naja Rosa", which she released to favourable reviews by critics.
She is regarded as the renewer of the tradition of Savage Rose.
Koppel's first solo concert in Denmark was held at the "Spotfestival" in Aarhus in 2010, for which she was awarded 6 stars by Danish music magazine "Gaffa".
Guillaume Wittouck
Guillaume Wittouck( 1749- 1829) was a Belgian lawyer and High Magistrate.
He was the Grandfather of industrialist Paul Wittouck.
Abd al-Muttalib
Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.
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.
Thomas Koppel
Thomas Koppel (27 April 1944 – 25 February 2006) was a Danish classical music and avant-garde popular composer and musician.
His father, Herman David Koppel (1908-1998), a composer and pianist of Jewish origin, fled the Nazis with his family in 1943.
Thomas was born in a refugee camp in Sweden.
The family moved to Denmark and Thomas studied at the Royal Danish Academy of Music with his father who was professor of piano.
Like his father, Thomas Koppel became a classical pianist and composer.
He wrote string quartets, a piano concerto, operas, cantatas, a ballet, symphonies and other orchestral works.
At age 18 he completed his first opera "The Story of a Mother", based on a tale by Hans Christian Andersen.
Koppel composed the score in 1971 for the ballet "Dødens Triumf" (Triumph of Death) which was danced naked at the Royal Danish Theatre.
Unlike his father, Thomas Koppel also composed and performed avant-garde popular music.
He founded the experimental rock group "Savage Rose" with his brother Anders and sister Lone.
In 1968 they added four more members including the singer Annisette.
Aside from rock, the group fused elements from classical music, jazz and rhythm and blues.
Thomas Koppel and Annisette later became partners and married.
They were deeply committed to projects to promote peace and social justice and in 1996 moved to Los Angeles drawn by its cultural and social diversity, including the homeless.
Koppel died unexpectedly on vacation in Puerto Rico.
One of his compositions is: Visiones Fugitives for piano & orchestra.

Answer: Herman David Koppel