I downloaded the Google Books pdf of Murray's Handbook for Travellers in 
Syria and Palestine; 1858 but can find no reference to Kefr Hawar (using 
as many spelling variations as I could think up).  Being a scanned pdf 
from an old copy of the book, there may be problems with the character 
string.  Does this quote of Kefr Hauwar come from a direct reading of 
the handbook or is it derived from Ganzel's book (which I have not seen 
but I did read the review by Louis Budd).  Mention of Dan De Quille 
sheds new and significant light on the subject.  Baedeker, in his 
"Palestine and Syria Handbook for Travelers", 1898 does note that Kefr 
Hauwer was the usual stop for travelers between Damascus and Banias.  
I've not looked at "Tent Life in the Holy Land" as I prefer to keep as 
much subjectivism as possible limited to Twain.

-- 
/*Unaffiliated Geographer and Twain aficionado*/

Visit B. Scott Holmes <https://bscottholmes.com>
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