[2] Gundisalvus was of humble origin, born in the city of Lagos, in the Algarve, in an uncertain date around 1360.

[2] In the 18th century, after a period of some decadence within the Portuguese Augustinian province, there was a renewed interest in the figure of Gundisalvus of Lagos and efforts began for his cultus to achieve pontifical recognition.

[3] Despite his common epithet of "saint" (São Gonçalo de Lagos), he was never formally canonised.

He is credited with having, 15 years after his death, miraculously appeared to a nephew of his, saving him from a shipwreck while en route to Lisbon.

[2] A bronze statue of Gundisalvus by sculptor Tolentino Abegoaria was erected by public subscription in 2001 in his birthplace of Lagos, on a viewpoint overlooking Praia da Batata.