Percy Richard Morley Horder (18 November 1870 – 7 October 1944) was an English architect who early in his career worked from offices in Stroud and later in London.

[2] He was born in Torquay, the son of the Congregationalist minister William Garrett Horder but later the family moved to Tottenham, London.

[3][4] He married Rosa Catherine (Katie) Apperly in 1897, the only daughter of Ebeneezer Apperley, a Stroud, Gloucestershire cloth manufacturer.

[7] Horder appears to have been eccentric, with a domineering character: "To his pupils he was "Holy Murder" (a Spoonerism on his name); according to his daughter, "he was most charming... and most awful"... "pushing artistic temperament to its limits, [he] looked and behaved like a cantankerous Old Testament prophet.

"[2] Ard Na Sidhe Country House, Carragh Lake, Killorglin, Co. Kerry, Ireland (1913) https://www.ardnasidhe.com/history Morley Horder worked with the Labour politician and landowner Sir Stafford Cripps and the local stonemason George Swynford on the provision of council housing in the village of Filkins.

"In so far as the architect falls short of the ideal of the painter and of the sculptor, or ceases to have an ideal beyond more bricks and mortar, he is not worthy of the name architect; but in the measure that he seeks to make the richest cathedral or mansion, or the humblest homes of the people suitable and materially beautiful, he has become a benefactor of many men and times, and is indeed an artist of the beautiful."