Marianne Johnson was a danish ceramist artist, who participated in the design of the 'Tenera' line, designed solely by female Scandinavian designers in the late 1950s-1960s for Royal Copenhagen, directed by the legendary Nils Thorsson. Her speciallity was these floral and abstract motifs, characteristic of the Tenera and Baca series.
 
Aluminia was a Danish factory of earthenware pottery, established in Copenhagen in 1863. 
Philip Schou (1838-1922) was the founding owner of the Aluminia factory in Christianshavn. 
In 1882, the owners of Aluminia purchased the Royal Copenhagen porcelain factory. The factories were operated independently under their respective trade names until 1969, when the use of the Aluminia name was ended. Since then the products have been sold under the mark "Royal Copenhagen Denmark Fajance". Between 1928-1969 the Artistic Director of Alumina was Nils Johan Thorvald Thorsson. (1898 – 1975) He wasleading a team of talented designers which included Bethe Breyen, Kari Christensen, Johanne Gerber, Grete Helland-Hansen, Berte Jessen, Marianne Johnson, Inge Lise-Koefoed, Ellen Malmer, and Ivan Weiss, among others. (Many of whose work you can find here on our website.)
Thorsson’s work as a designer varied greatly thematically, from the naturalistic featuring birds, fish, and butterfly motifs, to the abstract and geometric. During his time at Royal Copenhagen, Thorsson was the factory's most prolific designer, his work is often presented as an exemplar of mid-century Danish modernism and is praised in the field of ceramic design.