When Otto Dünnebeil was born on 2 December 1867, in Gorsleben, Eckartsberga, Saxony, Germany, his father, Johann Michael Dünnebeil, was 61 and his mother, Emilie Clementine Mengel, was 42. He married Clara Eichentopf on 3 June 1895. They were the parents of at least 1 son and 1 daughter. He died on 10 June 1943, in Lübeck, Germany, at the age of 75.
Originally a short form of any of the various Germanic compound personal names containing the element od, ot ‘prosperity, wealth’ ( compare the corresponding Old English ēad in names such as Edward and Edwin ). St Otto of Bamberg ( d. 1139 ) was a missionary to the Pomeranians. Otto the Great ( 912–73 ) is generally regarded as the founder of the Holy Roman Empire, and the name has been borne by several members of German and Austrian royal houses. It was recorded occasionally among immigrants to England from the Low Countries in the 14th century, but failed to establish itself. Since the 19th century it has again been used occasionally in the English-speaking world, mostly among immigrants from Germanic countries.