The May 28 1936 edition of the Toronto Daily Star covered the Dionne quintuplets’ second birthday in some detail. But it also included a photograph of a set of triplets who were having their second birthday that day as well:
Needless to say, these triplets were fraternal, not identical, as there were two boys and one girl.
I tried searching for information on the Chisholm triplets, but turned up mostly information on a couple named Nick and Nicola Chisholm who became parents of triplets in 2020. They were noteworthy because Nick Chisholm, who is the brother of the host of Survivor NZ, has locked-in syndrome after suffering a series of strokes after a rugby match.
I did find an obituary for Herbert Chisholm, who passed away in 2008. At that time, the other two triplets were still alive.