In this article, Dutch capitalization is used for tussenvoegsels in Dutch family names. The first letter in Van Stockum is capitalized unless it is preceded by a name, initial or title of nobility.
Van Stockum, Toronto, c. 1935.
Willem Jacob van Stockum (20 November 1910 – 10 June 1944) was a Dutch mathematician who made an important contribution to the early development of general relativity.