Jacobsen according to wiki is a Danish-Norwegian patronymic surname meaning "son of Jacob"
http://en.wikipedia.org/wiki/Jacobsen_(surname)
In wiki's list of People who have made themselves know, Germany is not well represented.
Allan Jacobsen (born 1978), Scottish rugby union player
Anders Jacobsen (ski jumper), Norwegian
Arne Jacobsen (1902–1971), Danish architect and designer
Astrid Jacobsen, Norwegian cross-country skier
Bernhard M. Jacobsen, Congressman from Iowa, USA
Carl Jacobsen, CEO Carlsberg brewery
Casey Jacobsen (born 1981), American basketball player
Christian Høgni Jacobsen, Faroese football striker
Erik Jacobsen, American record producer
Florence S. Jacobsen, sixth general president of the Young Women's Mutual Improvement Association of The Church of Jesus Christ of Latter-day Saints
Gay Jacobsen D'Asaro, American foil fencer
Henry Jacobsen, Norwegian politician
J. C. Jacobsen, Danish industrialist who founded Carlsberg brewery
Jens Peter Jacobsen (1847–1885), Danish novelist, poet, and scientist
Johan Jacobsen, Danish film director
Jón Rói Jacobsen, Faroese football defender
Jørgen-Frantz Jacobsen, Faroese writer
Joseph Jacobsen, American pair skater
Josephine Jacobsen, American author
Ken Jacobsen, American politician
Kevin Jacobsen, Australian entertainment businessman
Lars Jacobsen, Danish footballer
Mette Jacobsen, Danish Olympic swimmer
Nicolas Jacobsen, American hacker
Nils Kristen Jacobsen, Norwegian politician
Pål Jacobsen, Norwegian football coach, former player
Peder Nikolai Leier Jacobsen, Norwegian politician
Peter Jacobsen, English jazz pianist
Peter Jacobsen, American golfer
Randall L. Jacobsen Sr., Christ-in Chaplain, M.O.R.E. Ministries, Muncie, IN. USA
Rógvi Jacobsen, Faroese football (soccer) striker
Rolf Jacobsen, Norwegian author
Roy Jacobsen, Norwegian author
Rune Angell-Jacobsen, Norwegian novelist
Solveig Gunbjörg Jacobsen, first person born south of the Antarctic Convergence.
Stephanie Chaves-Jacobsen, actress
Thorkild Jacobsen (1904–1993), Danish-born historian and specialist in Assyriology and the Epic of Gilgamesh.
William S. Jacobsen, Congressman from Iowa, USA
Matthew Jacobsen, Australian born Actor