I don't know, Dutch is quite close to English (especially regarding these "weird" English plurals, like child/children and kind/kinderen, cow/kine and koe/koien

I don't know, Dutch is quite close to English (especially regarding these "weird" English plurals, like child/children and kind/kinderen, cow/kine and koe/koien, ox/oxen and os/ossen) and it also has these two plural endings, -s and -(e)n, but they depend mostly on the word ending (with many exceptions) not on meaning. Regarding another note from the article, Dutch also has the "double" plural for child/children with kind/kinderen. As the cases became less and less used, "-er" stopped being seen as plural so people naturally added -en to it to make it plural. A bit like if people started saying "ox/oxens" in English because "oxen" doesn't feel plural enough.