Question: Where did Kipferl orginate?
About the article "Croissant", section "Origin".

Candidate passages:
Makówki is also well known in Brandenburg and Berlin under the name "Mohnpielen" A similar dish, but with slices of Kifli (Kipferl) in Hungary is called "Mákos Guba". 
Rugelach (; ), other spellings: rugelakh, rugulach, rugalach, ruggalach, rogelach (all plural), rugalah, rugulah, rugala (singular), is a Jewish pastry of Ashkenazic origin.
Traditional rugelach are made in the form of a crescent by rolling a triangle of dough around a filling.
Some sources state that the rugelach and the French croissant share a common Viennese ancestor, crescent-shaped pastries commemorating the lifting of the Turkish siege, possibly a reference to the Battle of Vienna in 1683.
This appears to be an urban legend however, as both the rugelach and its supposed ancestor, the Kipferl, pre-date the Early Modern era, while the croissant in its modern form did not originate earlier than the 19th century (see viennoiserie).
An alternative form is constructed much like a strudel or nut roll, but unlike those, the rolled dough and filling is cut into slices before baking. 
Kifli () is a traditional European yeast roll made into a crescent shape.
The pastry is called kifli in Hungarian, "Kipferl" in Austrian German, кифла/"kifla" in Serbian, "kifla" in Bosnian, "рогалик" in Ukrainian, "кифла" in Bulgarian.
In the West Slavic languages is called "rohlík" in Czech, "rožok" in Slovak and "rogal" in Polish. 
Michael and Fluffy travel to Waterloo to get the train.
Fluffy is anxious as he is worried that they won't know what time it is as there won't be a clock with 'English numbers'.
At this point in the story a dust particle is brought in to narrate parts of the story that need explaining.
The pair arrive in France and Fluffy decides he wants McDonalds.
Michael suggests eating frogs legs which upsets Fluffy and he decides he hates France.
They finally get on the train to go to Rome where they meet some eccentric characters on the train.
One of the people they meet on the train is a young girl called Sylvia who tells Fluffy 'I love you rabbit!'
and he gets upset because he doesn't think that he is a rabbit.
Michael has some strange dreams on the train, one of which involves Sylvia eating Fluffy.
He awakes to a start and finds that Fluffy is not in bed any more.
He frantically searches around and goes to Sylvia's cabin where he finds her holding what looks like Fluffy but turns out to be a kipferl.
He is reunited with Fluffy when a man who looks like the farmer in Fluffy's tractor book comes and finds Michael and returns Fluffy to him.
Some snap shots show Fluffy and Michael on the journey to Sicily and it ends with Michael on the phone to his sister, Rosetta.
She tells him that their mother has become a new-found Catholic and that his 'girlfriend' (Miss Owers) has been ringing their house. 
Fanciful stories of how the Kipferl — and so, ultimately, the croissant — was created are widespread and persistent culinary legends, going back to the 19th century.
However, there are no contemporary sources for any of these stories, nor does an aristocratic writer, writing in 1799, mention the Kipferl in a long and extensive list of breakfast foods.
The legends include tales that it was invented in Europe to celebrate the defeat of the Umayyad forces at the Battle of Tours by the Franks in 732, with the shape representing the Islamic crescent; that it was invented in Buda, or, according to other sources in Vienna in 1683 to celebrate the defeat of the Ottomans by Christian forces in the siege of the city, as a reference to the crescents on the Ottoman flags, when bakers staying up all night heard the tunneling operation and gave the alarm.
This has led to croissants being banned by some Islamic fundamentalists.