Possibly as a byname/nickname from pöysti.[1]
Pöysti
Inflection of Pöysti (Kotus type 5/risti, no gradation) | |||
---|---|---|---|
nominative | Pöysti | Pöystit | |
genitive | Pöystin | Pöystien | |
partitive | Pöystiä | Pöystejä | |
illative | Pöystiin | Pöysteihin | |
singular | plural | ||
nominative | Pöysti | Pöystit | |
accusative | nom. | Pöysti | Pöystit |
gen. | Pöystin | ||
genitive | Pöystin | Pöystien | |
partitive | Pöystiä | Pöystejä | |
inessive | Pöystissä | Pöysteissä | |
elative | Pöystistä | Pöysteistä | |
illative | Pöystiin | Pöysteihin | |
adessive | Pöystillä | Pöysteillä | |
ablative | Pöystiltä | Pöysteiltä | |
allative | Pöystille | Pöysteille | |
essive | Pöystinä | Pöysteinä | |
translative | Pöystiksi | Pöysteiksi | |
abessive | Pöystittä | Pöysteittä | |
instructive | — | Pöystein | |
comitative | See the possessive forms below. |