Known sourcecanonical
"I am she, O most bucolical juvenal, under whose charge are placed the milky mothers of the herd."
Sir Walter Scott / The Betrothed. Chap. xxviii.
Bartlett's Familiar Quotations, 9th ed. (Little, Brown, 1905), public domain
Bartlett's Familiar Quotations, 9th ed. (Little, Brown, 1905), public domain