my grandfather who lives at à farm, owns an ewe in the river.
Remarks about the translation
Ãi á Ã, á á à á.
Ãi -> ancestor -> or from "afi" -> grandfather á -> on, in, at à -> river, water, stream, (or à is the name of a farm) á -> present indicative of eiga -> own á -> accusative and dative of "ær" -> ewe (female sheep) à -> in, on á -> river, water, stream.
"grandfather at the river owns an ewe in the river"
If "Ã" is the name of a farm:
"grandfather at à owns an ewe on the river"
To make understandable:
"my grandfather who lives at à farm, owns an ewe in the river"