Is there any historical evidence that the early church believed in the doctrine of intercession of saints during the 1st and 2nd centuries AD?

Motivated by a [related question](https://christianity.stackexchange.com/questions/80656/are-there-any-biblical-examples-of-early-church-disciples-praying-to-deceased-sa) , I would like to know if there is any historical evidence that the early church believed in the doctrine of [intercession of saints](https://en.wikipedia.org/wiki/Intercession_of_saints) during the [1st](https://en.wikipedia.org/wiki/1st_century) and [2nd](https://en.wikipedia.org/wiki/2nd_century) centuries AD.