For many years the Principal of the wine merchants L. Frumkin &. Co.

Mr. Frumkin was born in Lithuania, a descendant of a long line of eminent rabbanim. His father, Rabbi Aryeh Leib Frumkin, renewed the settlement of Petah Tiqva - which had been abandoned several years earlier because of the malarial swamps - in 1871, and reestablished a home for his family there. At a very early age Elias was sent to a yeshiva in Jaffa; and from that time his devotion for Israel knew no bounds.

In late 1893, when he was nearly twelve years of age he was brought with the rest of the family to England where, in 1894, with the interests of Israel at heart, Rabbi Frumkin established the firm of L. Frumkin & Co. for the sole purpose of importing wines from the vineyards he had planted in Peta Tiqva.
For a number of years Mr. Frumkin was an energetic member of the Cannon Street Road Synagogue, where his father was the honorary Rav.

In 1911, Rabbi Aryeh Leib Frumkin returned to Palestine and his son, Elias, took over the business. He, like his father, was more interested in books and scholarship than in the family business, which was mainly run by his wife, Rachel.

During 1918 Mr. Frumkin moved to Clapton and was instrumental in interesting the few local people in opening a synagogue and, in consequence, the property on which the Lea Bridge Synagogue was to stand was purchased and the Lea Bridge Road Synagogue founded.

In 1924 he moved to Finsbury Park and again he immediately set to work in establishing a synagogue, and at his own expense he purchased No. 414 Seven Sisters Road and founded a synagogue and Hebrew classes, which continued for many years as a centre of learning. Mr Frumkin served as the Honorary President there and the synagogue came to be known as the Frumkin Beth Hamedrash. Even those who were not regular worshippers there liked to walk in on a Shabbath afternoon for the Sholosh Seudos to listen to the divrei Torah of Mr Frumkin or one of the itinerant lecturers whom he always attracted,  or to enjoy his never ending fund of interesting stories. Every conversation of his was adorned with quotations from religious sources and especially from T'nach which he literally knew by heart. Nevertheless, he bore his scholarship lightly.

Elias was a devoutly religious man, known for his generosity of spirit and eagerness to help people in need. The Frumkin home was an ideal combination of scholarship and warm-hearted hospitality. 

During the last few years of his life Mr. Frumkin had devoted himself to the study of the Torah and holy writings, and during this time he compiled a Talmudic encyclopaedia and a commentary on the Kohelet. Without doubt he was one of the greatest authorities of the Bible and Tnach of his time.

(Adapted from Rabbi M. Frydman - The Jewish Chronicle Mar 28 1958, Dayan Dr. I Grunfeld - The Jewish Chronicle Apr 4 1958, Dayan Dr. I Grunfeld - The Jewish Chronicle May 31 1968 and https://rabbidunner.com/rebel-rabbi-of-london/#_edn36)

Further reading:
https://londonwiki.co.uk/LondonPubs/StGeorgeEast/CommercialRd162.shtml
https://rabbidunner.com/rebel-rabbi-of-london/
https://frumkin.org.il/shop-story.htm