From the prayer "Our Father who art in heaven Hallowed be Thy name." A friend of mine (age 6 at the time) used to think it was "Howard be Thy name" and he used to think it was really cool that God's name was Howard and that's how he prayed to Him.
A childhood belief about prayers

others believed things like this
- "Our father, who art in heaven. Howard be thy name."
I still say "Thank You Howard" when I feel blessed.— cathy - When I was learning the Lord's Prayer, I used to say, "Our Father, who does art in heaven...."— Karen
- I thought that God's name was "Hallowed".."Hallowed be thy name"?— Bob
- My friend's sister believed the lyrics to Gazza's "Fog on the Tyne" were "Fog on the dinasaurs mine all mine"— Suzanne
- I used to believe that in the Christian Prayer of the Faithful, we were responding, "Lord, harrow prayer."— Smelleanor
- "Our father, with Art in Heaven, how do you know my name?"Anon