Rubuta ci gaba don wannan sakin layi - Gösta Tage Filip Sjögren an haife shi a 1905, a waje da Växjö, a lardin Småland, kuma yana da shekaru 10 ya koma Stockholm. Sa'ad da yake ɗan shekara 17, aka aika shi zuwa Roma, bayan haka ya yi tafiya zuwa ƙasashen Balkan, Spain, Arewacin Afirka, Poland, da Finland. A matsayin mai adawa da fasikanci a lokacin yakin basasa na Spain, ya shiga Brigades na Duniya kuma ya ji rauni a yaƙi. Abubuwan da ya fuskanta a cikin yaƙin sun ba shi jigogi don litattafansa da yawa. Bayan ya warke, an kama shi a matsayin ɗan leƙen asiri, amma daga baya ya tsere daga Spain a kan wani jirgin yakin Birtaniya. Bayan ya yi aiki a matsayin ɗan jarida, an tattara mafi kyawun labaransa a cikin littafinsa na farko, "Bar barbar" (1937). Duk da wannan littafin da wasan kwaikwayo na rediyo lokaci-lokaci da gajerun labaru, Sjögren bai ja hankali ba har sai bayyanar Black Palms ("Svarta palmkronor", 1944), wanda ya zama fim na Lars-Magnus Lindgren a 1968. Littafinsa na biyu, "Gurasa na Soyayya" ("Kärlekens bröd", 1945), ya dogara ne akan abubuwan da ya samu a matsayin mai sa kai a cikin Yakin Ci gaba na Finnish
na shekara ta 1941-44. An haramta fim din littafin da Arne Mattsson ya shirya (1953) a Finland.