Jan Ludwik Sylwester Staniewicz, alias Stanisław Pisarski (27 December 1823 in Lyduvėnai or Bazilionai – 21 February 1904 in Kamienskoye) was a participant of the January Uprising in Lithuania, head of the Šiauliai district.

[1] As a soldier of the 1st Foreign Regiment, he served until 1848 in French Algeria, where he became a non-commissioned officer, rising to the ranks of corporal and later sergeant.

[1] While serving in the 81st Apsheonian Infantry Regiment [ru] he distinguished himself in the battles against Imam Shamil's forces,[2] receiving a decoration, and in 1855 was promoted to the rank of ensign and dismissed.

He returned to Samogitia and settled in Dirvonėnai [lt], on the estate of Eligiusz Kownacki, marshal of the Šiauliai District.

[3] After the uprising broke out, he organised a detachment of about 100 people in the estate of Biliūniškės [lt] (4 km south of Papilė) and was appointed head of the Šiauliai District.

[5] Beaten by the Russians on 21 May near Tryškiai, he broke through to the south and joined his now 400-man detachment with the parties of Father Antanas Mackevičius, Ignacy Laskowski and Paulin Bohdanowicz.

He then broke off and headed towards the sea to secure the landing of Colonel Teofil Łapiński, who was carrying arms for the insurgents.

On 19 October, the battle of Daniliškės took place, in which 25 insurgents were killed, including Paweł Staniewicz, Jan's brother.

[6] Staniewicz in France wrote down his Pamiętnik z r. 1863 [...] dowódcy oddziału w powiecie szawelskim (English: Diary of 1863 ... of the commander of a unit in the Šiauliai district), which was burnt down in Warsaw during the Second World War.