I was once part of a wedding where everyone but the father of the bride knew that the little toddler running around was the child of the groom. He just naturally assumed the baby belonged to a guest. His daughter did not want to inform him as it would have been another strike against the groom who was significantly older than her so she chose not to say anything at all to her father. It all nearly came to a head when the photographer wanted a family photo and so the bride quickly decided that it was the perfect time for a bathroom break and since the dress was long and cumbersome it would take a while to get that done. In reality, was her way of taking as much time as possible for everyone to get restless and wonder off so there would be no family portrait with the little boy included.