[4][5] His Wisden obituary describes Penn as "the famous Kent batsman" who had "a short but very brilliant career, ranking for several years among the finest batsmen of his day.

"[4] It described his batting as combining "strong defence with splendid hitting" and said he had "a free, commanding style".

[4] His cricket career ended in 1881 when his doctor advised him not to run due to heart disease.

[6] After his playing career, Penn remained a prominent figure at Kent, helping Lord Harris build the club.

[7] His brothers William and Dick also played for Kent, as did his son Frank junior.