Tracing my Polish-Russian noble roots in Tsarskoye Selo

I’m researching my family history and trying to understand the connection between my Polish noble ancestors and the later Russian branch who lived in Tsarskoye Selo (Царское Село) during the 19th and early 20th centuries.

My great-grandfather Valerian Zalinski (Валериан Залинский) left Russia for Belgium (Бельгия) in 1920, together with his brother Ivan Zalinski (Иван Залинский), after the defeat of the White Army. Their father, Stanislav Zalinski (Станислав Залинский), is believed to have served in the Imperial police at the palace in Tsarskoye Selo (Царское Село), while their grandfather Maximilian Zalinski (Максимилиан Залинский) was a Kapellmeister at the Tsar’s court (придворный капельмейстер).

I have found several military and administrative records (военные и административные записи) mentioning members of my family, but I haven’t yet been able to trace the earlier Polish origins of the line. I’m particularly interested in learning how and when the family entered Imperial Russian service.

If anyone has experience with Tsarskoye Selo archives (архивы Царского Села), Imperial administration records (архивы императорской администрации), or Polish noble families who settled in Russia (польские дворянские семьи, переселившиеся в Россию), I’d be very grateful for your advice.

Thank you in advance for any help or leads

Here are some archives I already found:

Information about Ivan, the son of Stanislav and brother of my great grandfather:
https://www.ria1914.info/index...0%B8%D1%87
https://mikhael-mark.livejournal.com/1206290.html?es=1

Information related to Pawel, a brother of Stanislav:

https://docs.google.com/docume...it?tab=t.0
https://m.pamyat-naroda.ru/her...amp;page=1

Have you thought about looking for your ancestors' immigration records? I have the exact same situation with my great-great-grandfather. He came by train from Warsaw to Ghent in Belgium. I found his immigration file as well as those of the other people involved. There's quite a bit of information in them.

I don't know if it will help you with your search, but you'll have some additional information.

РГИА Ф. 1343 Оп. 40 Д. 1837
Название фонда
ТРЕТИЙ ДЕПАРТАМЕНТ СЕНАТА
Заголовок
Департамент герольдии Сената. Дело о потомственных почетных гражданах. Залынский.
Крайние даты 22 сентября 1916 г.

ЦГА СПб. Фонд Р-3121. Опись 2. Дело 1544
Залынский Павел Станиславович
Фонд: ф.Р-3121 САНКТ-ПЕТЕРБУРГСКИЙ ГОСУДАРСТВЕННЫЙ ТЕХНИЧЕСКИЙ УНИВЕРСИТЕТ.
Опись: оп.2 Архивная опись дел постоянного хранения (личный состав)
Раздел описи: Отчисленные за 1918-1927 годы
Крайние даты документов: 01.01.1915–31.12.1918
Количество листов: 72

ЦГИА СПб. Фонд 14. Опись 3. Дело 67803
Личное дело Залынского Павла Станиславовича
Фонд: ф.14 ИМПЕРАТОРСКИЙ ПЕТРОГРАДСКИЙ УНИВЕРСИТЕТ. ПЕТРОГРАД. 1819–1918.
Опись: оп.3 Дела правления и правления по хозяйственному столу. Личные дела студентов за 1831, 1870-1916 гг.
Крайние даты документов: 1915
Количество листов: не указано

Залынский Николай Станиславович