G. H. A. Juynboll

Gualtherüs (Gautier) Hendrik Albert Juynboll (1935–2010) was a scholar of Islam specializing in ''hadith'' (the collection of sayings attributed to the Prophet of Islam Muhammad), about which he published more than twenty articles. His contributions to hadith studies have been called "substantial and groundbreaking" (by Jonathan A. C. Brown), and he has been called "talented and tireless" (A. Kevin Reinhart); he was in 2020 the honorand of a ''Festschrift''. Provided by Wikipedia