Had he not died (in 1879) Henry Smart would be celebrating his 207th birthday today (26th October).
I think most (English speaking) organists will almost certainly recognise the name (he composed the hymn tune Regent Square) and many will probably have yellowing scores of his music in the cupboard, which they've inherited but never seriously looked at.
In his time, he was apparently well regarded but he doesn't feature much nowadays (he isn't even in the list of "ready-made" composers in the dropdown on CB). According to Wikipedia, the 1911 Encyclopaedia Britannica described his music as "effective and melodious, if not strikingly original," and this piece, which is typical, demonstrates the accuracy of this.
I'm also uploading his Postlude in C, which is much less "ordinary" and is quite often heard at the end of cathedral services.