The following is from a digest of the kirk session records for Kirkmichael. This is as transcribed
"Ron Donald 1841 Servant in Ruthven father of child by Janet Cumming".
Ron may be an incorrect transcription of Ross - there is a village called Ruthven in the parish of Cairnie, Aberdeenshire as well as a parish called Rathven in Banffshire.
There are umpteen Ruthvens in Scotland, including the village in the parish of Cairnie, and there is one Rathven.
When a place is mentioned in an old parish register, it is almost invariably a place
in the same parish. If it is a different parish, the records will say so.
Therefore this Ruthven will be the one in
http://www.geograph.org.uk/gridref/NJ1521 because it is in the parish of Kirkmichael, Banffshire.
