I have a few Svislach Kaplans in my family tree.
Bracha (Brosza) Burde (born Kaplan) 1896-1942 married Alter Burde 1992-1942
Chaje Sore Kaplan (born Michnovski) 1892-1942 married Nisan Kaplan 1892-1942 with five children.
They were murdered in the Shoah in 1942 as was the entire Svislach Jewish community.
Anna Kaplan (born Zacuto). No information about this person other than a reference in the obituary of Etta Kantrovitz (Zacuto) which refers to her sister, Anna Kaplan, in Liverpool. This would make her a daughter of Ariel Leib Zacuto. Estimated birth 1880-1900.