When he was still a pagan Alban gave shelter to a priest who was being hunted by pagan persecutors. It was not long before Alban was converted by his guest, and when the soldiers ultimately arrived at his house in search of the priest it was Alban, disguised in his guest's clothes, who gave himself up to them, and who was beheaded at what is now St. Alban's in 303.
There can be no better way of marking St. Alban's day than by imitating his hospitality. One of the things that Christ will say to his followers at the last judgment is: "I was a stranger and you took me in," and when he is asked what he means he will explain that giving hospitality to anyone is giving hospitality to him.
On St. Alban's day everyone could deliberately go out of their way to invite some lonely person to their home, and that day could give them all the attention and care and affection possible, doing it all in the honor of St. Alban, who was willing to give even his life for the man who was his guest.
Source: A Candle is Lighted, Imprimatur 1945