This document summarizes Herman Kellgren's work analyzing the Finnish language through the lens of Wilhelm von Humboldt's linguistic theory. As a Fennoman scholar in 19th century Finland, Kellgren sought to elevate the status of Finnish by showing how it fulfilled the requirements of an ideal language according to Humboldt. However, Humboldt's theory favored languages with inflection over agglutination, and Finnish posed challenges as an agglutinative language. The document discusses how Kellgren engaged in an intellectual struggle to defend the legitimacy of Finnish grammar in the face of these theoretical "inconveniences".