Elyashev Jēkabs born 3 December 1864 in Žagarė, Šiauliai District; father — Simon. Lived in Polotsk.
Graduated from the Alexander Gymnasium in Riga.
Later studied and graduated from the law faculty of St Petersburg University.
Assistant sworn advocate in Polotsk.
From 21 July 1905, sworn advocate in Riga.
In 1915, left as a refugee to Russia.

After the First World War, came to Latvia. In the 1920s–30s was a sworn advocate in Riga and chairman of the committee for the return of Jewish refugees. One of the founders of the Riga Jewish Club; participated in the boards of various Jewish civic organisations. In 1921–23, member of the Council of Sworn Advocates. Died 25 December 1939.

Married to Glika Neftoline (16 October 1874 — 1941, killed in the Riga Ghetto); sons: David Elyashev — sworn advocate (see entry), Mikhail (born 14 May 1896) and Boris (born 4 January 1904).

Glika Neftoline (1874–1941) — wife
Elyashev David — sworn advocate — son
Elyashev Mikhail — son
Elyashev Boris — son

LA 170–171