Some syncretic Buddhist and Christian observers have commented on the similarity between Guanyin and Mary of Christianity, the mother of Jesus Christ. The Tzu-Chi Foundation, a Taiwanese Buddhist organization, also noticing the similarity, commissioned a portrait of Guanyin and a baby that resembles the typical Roman Catholic Madonna and Child painting.Some Chinese of the overwhelmingly Roman Catholic Philippines, in an act of syncretism, have identified Guanyin with the Virgin Mary.[5]During the Edo Period in Japan, when Christianity was banned and punishable by death, some underground Christian groups venerated the Virgin Mary disguised as a statue of Kannon; such statues are known as Maria Kannon. Many had a cross hidden in an inconspicuous location.http://en.wikipedia.org/wiki/Guanyin
Also interesting to note the origins of the word "ishvara", meaning lord, found in Avalokiteshvara. Lord Shiva of the Shaivite branch of Sanatana Dharma (Hinduism) is considered a manifestation of Ishvara, an aspect of Brahman.http://en.wikipedia.org/wiki/Avalokite%C5%9Bvara#Etymologyhttp://en.wikipedia.org/wiki/Ishvara#Etymology
I was awestruck. It felt so resonant and familiar.