Draftsman, Jacob Lenzen, San Jose, CA; Draftsman, J.P. Gaynor, Architect, San Francisco, CA, c. 1882; Partner, Jacob Lenzen and Sons, Architects, San Jose, CA, after 1887;

Educated at public schools in San Jose, CA; College of the Pacific, Monterey (studied architecture);

Theodore Lenzen and his family lived at 151 Vine Street, San Jose, CA, in 1900. Lenzen had a mortgage on this house. In 1910, Lenzen lived in Assembly District 39 of San Francisco, CA. He and his wife, Kate, lived at 1635 Irving Street in San Francicso.

His father was the well-known, San Jose, CA, architect, Jacob Lenzen, Jr.; his mother, Kathrina Heckenroth Lenzen. Theodore incorporated with their father to form, Jacob Lenzen and Son, Architects;

He married in c. 1890 a woman named Catherine A. Lenzen, who came to the US in 1885 from Germany, this according to the US Census of 1900. (According to the US Census of 1930, she was naturalized in 1873.)

In 1900, his children were: sons, Victor Fritz (born San Jose, CA, 12/14/1890 died 07/18/1975 in Alameda County, CA) and Elmer M. (born 08/1893 in San Jose, CA), and Catherine M., (born 03/1900 in San Jose, CA). In 1930 and 1941, Victor was a Professor in the Physics Department at the University of California, Berkeley. Elmer became a contractor by 1930, building houses in Fremont, CA.

Theodore W. Lenzen took an architectural tour of Europe in 1886-1887, to fill out his education;

• San Jose, CA (Architect's Birth)
  San Jose, CA

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