Saint Sulian and Saint Tysilio ...
Contributors: Le Grand, Albert, -1640
Series: "Cornish saints" series -- no. 37; "Cornish saints" series -- no. 37.
Publisher: Billing
Published: 1936
Place of publication: Guildford
Language: eng
Number of pages: 40
Notes: "Reprinted from Laudate, December 1935, and March 1936."

It has been generally supposed that Sulian and Tysilio were the Breton and Welsh names, respectively, of the same saint. Canon Doble thinks that "we may be quite certain tha St. Sulian is not the same person as St. Tysilio".

"The life of Saint Suliau or Syliau", translated from Albert le Grand: p. 7-14.