FamilySearch (https://www.familysearch.org/ark:/61903/1:1:V72M-QFG : 23 June 2020), Theodora B. Ducker in entry for Gustaf Wilhelm, 1736. - Theodora B. Ducker in entry for Gustaf Wilhelm, "Sweden Baptisms, 1611-1920" » Les sources » West-Europese adel » Généalogie Online"> FamilySearch (https://www.familysearch.org/ark:/61903/1:1:V72M-QFG : 23 June 2020), Theodora B. Ducker in entry for Gustaf Wilhelm, 1736. - Theodora B. Ducker in entry for Gustaf Wilhelm, "Sweden Baptisms, 1611-1920" » Les sources » West-Europese adel » Généalogie Online">
"Sweden Baptisms, 1611-1920", database, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:V72M-QFG : 23 June 2020), Theodora B. Ducker in entry for Gustaf Wilhelm, 1736. - Theodora B. Ducker in entry for Gustaf Wilhelm, "Sweden Baptisms, 1611-1920"