Johanssonin
Johanssonin is the genitive form used in Finnish to indicate possession or association with someone named Johansson, a common Swedish-origin surname. In Finnish, the possessive suffix -in is attached to proper nouns to express “of” or “belonging to.” The base name Johansson remains unchanged, and the resulting form Johanssonin is used before nouns or in phrases that denote ownership or relation.
The form is employed in everyday language, journalism, and literature to attribute property, works, or statements
Usage considerations include that Johanssonin denotes a singular possessive; when referring to more than one person
See also: Johansson (surname), Finnish possessive suffix -in, Finnish grammar.