1883 July, Emrys ap Iwan, “Agwyddor ac Orgraff y Gymraeg. [The Alphabet and Orthography of Welsh.]”, in John Thomas, editor, Y Geninen: Cylchgrawn Cenedlaethol. [The Leek: A National Magazine.], volume I, number 3, page 224:
I mi, i ti, &c. — Byddai yn well cyfuno’r rhagenwau personol â’r arddodiad i yn y dull hwn : — iddof (fi) iddom (ni) iddot (ti) iddoch (chwi) iddo (ef) iddynt (hwy) iddi (hi)
I mi, i ti, &c. — It would be better to combine the personal pronouns with the preposition i [“to”] in this manner : — iddof (me) iddom (us) iddot (thee) iddoch (you) iddo (him) iddynt (them) iddi (her)
2002, Elen Sentier, quoting Martin Ludgate, edited by Fiona Dove, Owl Woman (overall work in English), Pea Green Boat Books, →ISBN, page 170:
Y mynedfa hyn rhôf iddoch I ofalu hyd yr oesoedd, Dros cynhedliadau dirifedi
This gate I give you, To guard through the ages, For unnumbered generations
