When Jens Kieldsen was born in 1770, in Romdrup, Ålborg, Nordjylland, Denmark, his father, Kjeld Sørensen, was 59 and his mother, Maren Jensdatter, was 32. He married Maren Pedersdr on 8 February 1807. They were the parents of at least 4 sons and 1 daughter. He died on 5 January 1850, in his hometown, at the age of 80, and was buried in Romdrup, Ålborg, Nordjylland, Denmark.
Norwegian and Danish: patronymic from the personal name Kjeld, a derivative of Old Norse ketill ‘sacrificial cauldron, helmet’. Compare Kelson .