Jokosta
Jokosta is a Finnish-language surname. It is typically treated as toponymic, arising from a place name or geographic feature associated with a river. The root element is likely related to joki, the Finnish word for river, with the -sta suffix indicating origin, or a locality name incorporating that root. As a result, Jokosta would historically designate someone from a place called Jokosta or a nearby riverine area. The surname remains relatively uncommon in Finland, and it does not feature prominently in major biographical reference works.
In genealogical records, bearers of the name may appear in civil and church registers dating from the
Notes on Finnish surnames suggest that many similarly formed names arose through local toponymy and settlement