Hi – in case this helps someone: https://heritage.canadiana.ca/view/oocihm.lac_reel_c3028/634. (Heritage Canadiana digitizes microfilms from Library and Archives Canada.) It's from the parish burial register of Trinity Anglican Church in Cornwall, Ontario, Canada, page 30, #210:

Frances daughter of Henry Atkins, an Emigrant, late from the Parish of Fanlobus, in the Town of Dunmanway County of Cork, Ireland, & of Frances his wife, aged 6 months, died October the 4^th & was buried October the 5^th 1823. By me S J Mountain Minister of Cornwall. Present: Henry Atkins Father, Thomas Pelan, Robert Ryle.