Ellenor Fenn (née Frere; 12 March 1743 – 1 November 1813; pseudonyms, Mrs. Teachwell, Mrs. Lovechild) was a prolific 18th-century British writer of children's books.

[1] Cobwebs to Catch Flies (1783), a reading primer, was perhaps her most popular book; it went through multiple editions in both Britain and America until the 1870s.

She also started a needlework school and "revived the trade to tow-spinning to give poor women an income.

"[1] Fenn died at Dereham on 1 November 1813, aged 70, and was buried at St Bartholomew's church, Finningham, Suffolk.

"[1] Many of these works focus on how to teach and outline Fenn's idea of proper reading materials.