Kolsi

Finnish

Possibly from a compound name with Koli?surname or from Koliseva.^[1]

Kolsi

Inflection of Kolsi (Kotus type 5/risti, no gradation)
nominative		Kolsi	Kolsit
genitive		Kolsin	Kolsien
partitive		Kolsia	Kolseja
illative		Kolsiin	Kolseihin
		singular	plural
nominative		Kolsi	Kolsit
accusative	nom.	Kolsi	Kolsit
accusative	gen.	Kolsin	Kolsit
genitive		Kolsin	Kolsien
partitive		Kolsia	Kolseja
inessive		Kolsissa	Kolseissa
elative		Kolsista	Kolseista
illative		Kolsiin	Kolseihin
adessive		Kolsilla	Kolseilla
ablative		Kolsilta	Kolseilta
allative		Kolsille	Kolseille
essive		Kolsina	Kolseina
translative		Kolsiksi	Kolseiksi
abessive		Kolsitta	Kolseitta
instructive		—	Kolsein
comitative		See the possessive forms below.

Possessive forms of Kolsi (Kotus type 5/risti, no gradation)

first-person singular possessor
		singular	plural
nominative		Kolsini	Kolsini
accusative	nom.	Kolsini	Kolsini
accusative	gen.	Kolsini	Kolsini
genitive		Kolsini	Kolsieni
partitive		Kolsiani	Kolsejani
inessive		Kolsissani	Kolseissani
elative		Kolsistani	Kolseistani
illative		Kolsiini	Kolseihini
adessive		Kolsillani	Kolseillani
ablative		Kolsiltani	Kolseiltani
allative		Kolsilleni	Kolseilleni
essive		Kolsinani	Kolseinani
translative		Kolsikseni	Kolseikseni
abessive		Kolsittani	Kolseittani
instructive		—	—
comitative		—	Kolseineni

second-person singular possessor
		singular	plural
nominative		Kolsisi	Kolsisi
accusative	nom.	Kolsisi	Kolsisi
accusative	gen.	Kolsisi	Kolsisi
genitive		Kolsisi	Kolsiesi
partitive		Kolsiasi	Kolsejasi
inessive		Kolsissasi	Kolseissasi
elative		Kolsistasi	Kolseistasi
illative		Kolsiisi	Kolseihisi
adessive		Kolsillasi	Kolseillasi
ablative		Kolsiltasi	Kolseiltasi
allative		Kolsillesi	Kolseillesi
essive		Kolsinasi	Kolseinasi
translative		Kolsiksesi	Kolseiksesi
abessive		Kolsittasi	Kolseittasi
instructive		—	—
comitative		—	Kolseinesi

first-person plural possessor
		singular	plural
nominative		Kolsimme	Kolsimme
accusative	nom.	Kolsimme	Kolsimme
accusative	gen.	Kolsimme	Kolsimme
genitive		Kolsimme	Kolsiemme
partitive		Kolsiamme	Kolsejamme
inessive		Kolsissamme	Kolseissamme
elative		Kolsistamme	Kolseistamme
illative		Kolsiimme	Kolseihimme
adessive		Kolsillamme	Kolseillamme
ablative		Kolsiltamme	Kolseiltamme
allative		Kolsillemme	Kolseillemme
essive		Kolsinamme	Kolseinamme
translative		Kolsiksemme	Kolseiksemme
abessive		Kolsittamme	Kolseittamme
instructive		—	—
comitative		—	Kolseinemme

second-person plural possessor
		singular	plural
nominative		Kolsinne	Kolsinne
accusative	nom.	Kolsinne	Kolsinne
accusative	gen.	Kolsinne	Kolsinne
genitive		Kolsinne	Kolsienne
partitive		Kolsianne	Kolsejanne
inessive		Kolsissanne	Kolseissanne
elative		Kolsistanne	Kolseistanne
illative		Kolsiinne	Kolseihinne
adessive		Kolsillanne	Kolseillanne
ablative		Kolsiltanne	Kolseiltanne
allative		Kolsillenne	Kolseillenne
essive		Kolsinanne	Kolseinanne
translative		Kolsiksenne	Kolseiksenne
abessive		Kolsittanne	Kolseittanne
instructive		—	—
comitative		—	Kolseinenne

Kolsi is the 4080^th (tied with 19 other surnames) most common surname in Finland, belonging to 184 individuals, according to February 2023 data from the Digital and Population Data Services Agency of Finland.