Turko from Luba>Wolyn>Russia

[Hannia]

I think Zlatica might have hit a home run for you when she found the town of Lyubar > today district center of appx 2,500 people.

The town was originally settled by Kyivan Rus in 1100 AD.

From late 18th century to 1919 it was in the Vohlynskaya gubernia/region > Czarist Russia. From 1921-1938 the region came under Reconstituted Poland's domain and was renamed the Zhytomirskie wojiwodstwo/region. Post WW2 it became a part of SSR Ukraine under Soviet domain, until 1991 when Ukraine became independent.

I ran the Turko surname thru Lyubar and found 2 Turko listed. I also ran the surname thru Starij (Old) Lyubar, village w/a population of 1,658 people, belonging to the Stryzhivka village cluster (sharing both village adm and post ofc, zip code 13131) and found 18 Turko listed there. There were none in Novij (New) Lyubar, village of 948. It too has a cluster village but I don't remember what it is. All these places are actually suburban villages of Lyubar, the district center> Lyubarskij raion/district > Zhytomirska oblast/region > Ukraine.

ТУРКО ОЛЬГА ИЛЛАРИОНОВНА 0 1930-05-20 ЛЮБАР ЛЕНІНА 48 0 14
ТУРКО ЕЛЕНА ВИКТОРОВНА 0 1972-03-31 ЛЮБАР СВЕРДЛОВА 0 0
ТУРКО НАТАЛИЯ НИКОЛАЕВНА 0 1975-08-12 СТАРИЙ ЛЮБАР СВЕРДЛОВА 0 0
ТУРКО ОЛЬГА ЛУКАШЕВНА 0 1931-01-28 СТАРИЙ ЛЮБАР ДОБРОВОЛЬСЬКОГО 8 0 0
ТУРКО ОЛЬГА КУЗЬМИНИЧНА 0 1929-03-10 СТАРИЙ ЛЮБАР НЕВІДОМА 0 0
ТУРКО МАРИЯ АНТОНОВНА 0 1927-07-24 СТАРИЙ ЛЮБАР НЕВІДОМА 0 0
ТУРКО СВЕТЛАНА ЯКОВЛЕВНА 0 1951-07-13 СТАРИЙ ЛЮБАР ЧЕРНЯХОВСЬКОГО 0 0
ТУРКО ОЛЬГА ИВАНОВНА 0 1929-03-09 СТАРИЙ ЛЮБАР НЕВІДОМА 0 0
ТУРКО ВЕРА МИХАЙЛОВНА 0 1948-08-13 СТАРИЙ ЛЮБАР СВЕРДЛОВА 0 0
ТУРКО ГАЛИНА ПЕТРОВНА 22828 1961-12-13 СТАРИЙ ЛЮБАР ЧЕРНЯХОВСЬКОГО 0 0
ТУРКО РАИСА ВАСИЛЬЕВНА 0 1954-03-08 СТАРИЙ ЛЮБАР ІВАНА ФРАНКА 46 0 0
ТУРКО ВАСИЛИЙ ВАСИЛЬЕВИЧ 0 1976-03-24 СТАРИЙ ЛЮБАР СВЕРДЛОВА 0 0
Vasyl, son of vasy
ТУРКО ВИКТОР ВИКТОРОВИЧ 0 1976-01-21 СТАРИЙ ЛЮБАР ЛЕНІНА 0 0
Viktor, son of Viktor
ТУРКО РУСЛАН НИКОЛАЕВИЧ 0 1978-04-29 СТАРИЙ ЛЮБАР ЧЕРНЯХОВСЬКОГО 0 0
Ruslan, son of Nykolaj
ТУРКО ОЛЕГ ИВАНОВИЧ 0 1972-08-18 СТАРИЙ ЛЮБАР СВЕРДЛОВА 50 0 0
Oleh, son of Ivan
ТУРКО ВИКТОР ВАСИЛЬЕВИЧ 22828 1960-02-06 СТАРИЙ ЛЮБАР ЧЕРНЯХОВСЬКОГО 0 0
Viktor, son of Vasyl
ТУРКО ВАСИЛИЙ ВАСИЛЬЕВИЧ 0 1949-03-10 СТАРИЙ ЛЮБАР СВЕРДЛОВА 0 0
Vasyl, son of Vayl
ТУРКО ВЛАДИМИР ПЕТРОВИЧ 22666 1930-03-15 СТАРИЙ ЛЮБАР СВЕРДЛОВА 2 0 0
Volodymir, son of Petro
ТУРКО НИКОЛАЙ АНДРЕЕВИЧ 0 1954-12-19 СТАРИЙ ЛЮБАР ЧЕРНЯХОВСЬКОГО 53 0 0
Nikolaj, son of Andrij
ТУРКО НИКОЛАЙ ВАСИЛЬЕВИЧ 0 1947-05-21 СТАРИЙ ЛЮБАР ЧЕРНЯХОВСЬКОГО 0 0
Nicholaj, son of Vasyl

PS> Today there are appx 3,000 Levon/Levyn (ЛЕВИН) residing in Ukraine today. It is not a Jewish surname. It means BELONGING TO A LION.

[Hannia]

Arkhip = Архип is a Russian Orthodox given name. It is a form of Archippos, which is rooted in Ancient Greek and means MASTER OF HORSES. You should be able to locate the saint's/martyr's name on a Russian Orthodox Calendar and the date should approximate (within 10 days or so) of GGrandfather's dob.
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If Prokoff's children were christened in an Orthodox Church, request the baptismal certificates. They are detailed and should provide more accurate clues to his exact origin.