I've been looking through my Ancestry DNA matches this morning, and I found someone with Oscar Poirer(1895 to 1968) in their tree who is listed as my fourth to sixth cousin. His father was Daniel Poirier and his mother was Sophie André.
I can't check any deeper on Ancestry, because I don't have a premium account, but I found some records on family search that suggest the following tree:
Joseph Oscar Poirier, born 1895 in Glen Nevis, Ontario, died 1968.
His father, Daniel Poirier, born 1861 -/+ 1 year in St. Polycarpe, Quebec, married Sophie André on 01 Oct 1883 in Lancaster Township, Ontario.
His father is listed as Rodk Poirier and his mother as Leonore Poirier on the index of his marriage document, but it looks like their names are Roderick 'Rodik' Poirier and Leonore Pharand from the actual image and from other documents.