Manuscripts, Sweden. CONSTANTIA ERIKSDOTTER (1560–1649), illegitimate daughter of Erik XIV of Sweden and Agda Persdotter. She was called "The Queen of Tiveden" from the late 1590s. Letter content most probably sent to her son Johan Frankelin asking for a can of rat poison. Dated and signed by her at her manor Odensfors (outside Linköping) 4 June 1618. Very scarce item.