132 famous people were born in Brantford, more of them soldiers and sailors than in most towns

The top name is Wayne Gretzky (Canadian ice hockey player and coach), going by Wikipedia coverage. Next come Phil Hartman and Adam Henrique.

Wikidata has 171 born here; the ones not shown have no article that agrees, or none at all.

46% of the list, where Canadian towns come to 38%.

The earliest is Margaret Girvin Gillin, born in 1833, and the latest birth listed is 2003.

Anyone Wikidata records as born at a place inside Brantford’s municipal boundary (Statistics Canada’s 2021 census subdivision), hospitals and districts within it included, whose English or French Wikipedia article confirms it. People who only lived here, adult performers and people known mainly for crimes are left out.

The likeliest reasons: a birthplace recorded only as a province or as Canada, a hamlet or rural area with no page of its own, or an article that gives another place or none. Fixing Wikidata or Wikipedia brings them onto the list at the next refresh, as long as the two then agree.