Naomi (Tootsie) Eggen - Was Tootsie Eggen the daughter of Bardolph Ege?

Overview comment made implying Bardolph Ege fathered the child Naomi (Tootsie) Eggen Anderson with Petra Strand Eggen. If he did, the birth record doesn't show that. So how is this information known?

True Eggen (also known as Naomi True Eggen and called Tootsie by her family)
in the Web: Minnesota, U.S., Birth Index, 1900-1934
Detail Source
Name True Eggen
Birth Date 27 Mar 1914
Birth Place St. Louis, Minnesota, USA
Father's Surname Eggen
Mother's Maiden Name Stran (Strand)
Certificate Number 1914-52305
URL http://people.mnhs.org/bci/Results.cfm?CERTID=1914-52305