The style of calligraphy developed by Sonen is known as the Shoren-in method, which was widely adopted during the Edo period and is the origin of Japanese style of handwriting, the Oieryu method.
尊円法親王の書風は「青蓮院流」と呼ばれ、江戸時代に広く普及した和様書風「御家流」の源流である。