According to Anna Lewkowska, Jacek Lewkowski and Wojciech Walczak, there are two cemeteries in Lack. The first is located next to the St. Stanislaus Church. Sixteen tombstones have been preserved there. The oldest, from 1872, is the tomb of Ludwik Skinder. It is a granite cuboid with a Greek cross. The inscription reads: 'LUDWIK SYN ANTONIEGO SKINDER / ZM. 1872 UR. 1800 / IN LESZCZANKA / side: ANTONI SON OF JANA SKINDER / DIED 27 MAY 1832." The cemetery is maintained in good condition.

The aforementioned researchers also write about a second, active Catholic cemetery. It has a rectangular plan, 1.2 ha in area. It is surrounded by a stone wall. It was established around the middle of the 19th century. The oldest tombstones, from 1866, commemorate Mikolaj Leszkiewicz and Teofila Ościewicz. There is "the grave of Aleksander Klukowski, captain of the 1st Lithuanian Corps, knight of the Order of Virtuti Militari. A gravestone from 1887 in the form of a rectangular vertical slab, founded on rocks. In the lower right corner a shield is supported on the rocks." The inscription reads: "ALEKSANDER KLUKOWSKI / KAPITAN LITEWSKIEGO 1 go KORPUSU / KAWALER ORDERU VIRTUTI MILITARIS / UR. 1806 R. / DIED. 26 MARCH 1887"

Bartłomiej Gutowski, Dawid Mendrek