According to the scant information available, T. A. Lawrenson seems to have studied Chemistry at the University of Cambridge, and later became a botanically interested headmaster in the Newcastle-South Tyneside Area. This could explain the naming of 'Miss Flora Mitten', who was a well-known pharmaceutical chemist.
[From "A List of Official Chemical Appointments", by Richard B. Pilcher, June 1906":] T. A. Lawrenson, bl. A. (Cantab.), tutc. B.Sc. (Lond.);
[From "Durham University Calendar with Almanack, 1919-1920", p. 156:] T. A. Lawrenson, headmaster of the Westoe Secondary School, was nominated 1913 to the Secondary Schools Committee of the Durham University
[From
Modern Roses V, 1958, p. 198:] T.A. Lawrenson, Newcastle-upon-Tyne, England.
[From "Manual of Cultivated Broad-leaved Trees and Shrubs", by Gerd Krüssmann, 1984, p. 144:] Helianthemum....'Lawrenson's Pink' (T. A. Lawrenson, Newcastle). Pink, orange center, single.