Sindri is the remaining living mother of Ragnar's first litter of pups. Having only birthed one of them herself, the rest were born of her late mate, Frigg. Sindri and Frigg have known one another since they were pups and as their relationship grew fell in love and became mates. On their travels they met up with Ragnar and after hearing his tails of Torbine decided to join him to his homeland (this happen around Fall 2019). It would appear they came to Torbine at a harsh time, it being currently lead by Aerys, the Mad King. To keep under the radar, the trio ended up joining the outsiders, basterds and rogues of The Wall.
 The following year in late Spring (June 2020) Sindri and Frigg asked if Ragnar would sire their pups to which he agreed. Tragedy happens when Frigg is injured in battle close to her due date. Already weakened by her injuries, Frigg dies only days later after giving birth to her litter of pups. She does however live long enough to see Sindri's child be born and to name them together with Ragnar.
 Together, Sindri and Ragnar decide after Winter's pass that they would leave their home on the Wall and begin anew. Sindri returns to the high north of her roots.

 Sindri and her family awake surrounded by mountains and with every belief the Gods had brought them here with reason. Gunthur, the single pup which she birthed, is not among them and so she searches far north while Ragnar takes the children to the west, seeking the seas.
 Alone, Sindri finds her home within Northfall waiting. The road to establishment is not easy as nor the life of Viking ever is...