When Ambrose said he found a father figure and it was a young Crowley, he was talking about Aleister Crowley who was born in 1875 and died at the age of 72 in 1947. Crowley was an English occultist, ceremonial magician, poet, painter, novelist, mountaineer, and founded the religion Thelema. if Ambrose met Crowley when he was young this would mean Ambrose is over 100 year old. Not to mention that it was stated that Ambrose taught stage magic to Houduni. Houdini lived from 1874 till 1926. So this is further proof that Ambrose is over 100 years old.
The stained glass ceiling seen in the Spellman home resembles the ceiling from the opening sequence in Suspiria (1977), a movie about a coven of witches.