An article entitled "Four Novel Swedish Rose Cultivars" published in HortScience 39(1) 2004, p. 198-200 provides some insight into the creation of the four roses bred by Ulrika Carlson-Nilsson.

"The first rose cultivars from Balsgard were released in 2000. They are named 'Anna,' 'Irma,' 'Balsgard Balder,' and 'Balsgard Freja.' The names of the cultivars 'Anna' and 'Irma' were chosen after the names of the breeder's grandmothers. 'Balsgard Balder' and 'Balsgard Freja' are named after two gods in Nordic mythology."