Josiah C. Williamson was born February 18, 1851, in Marshfield, Massachusetts, coming to Pescadero, California, December 14, 1869, via the Isthmus of Panama. He lost no time, but immediately engaged in the dairy business. After four years spent at this, he clerked in a store until 1885, when he opened up a general merchandise store, which is still continued by him and is the largest mercantile establishment in Pescadero.
On December 14, 1879 he married Harriet Hornsinger. The children born to this union, who are now living, are: Frank, Gladys, and Elmira.
Mr. Williamson served as postmaster in Pescadero for eight years. Fraternally he is a member of the Odd Fellows.