[2] Roslin's parents were Juha Ahlroth of Mäkitupa and the vicar Bergelin's granddaughter Karoliina Juhontytär.
Roslin attended a circuit school and earned a living as a seamstress, salesperson and craft teacher, but writing was her passion.
Roslin got her name in Governor-General Bobrikoff's "Black Book" when she launched the so-called Great Speech to appeal to Nicholas II of Russia.
[3] Roslin received a summons to the Court of Appeal of Turku in 1914 after the publication of his work Miettei Gogi sostasta.
In the work, Roslin presented the prophecies of the war that would end Russia's oppressive rule in Finland, told by Gustaf Nyholm, the vicar of Merikarvia, in 1877.