The website below describes what is apparently an ancient Jewish wedding custom, in which it was apparently said that "only the Father" of the groom "knows" when the wedding would take place.:
[I]n order to maintain the respect and dignity of the father’s place in the home, it would naturally be said “that only the father knows” when it would be time for the son to go get the bride. This did not necessitate that the son did not know because the community would have to know within a reasonable degree of accuracy when the wedding would occur. (Source)
Is there a source for this practice within the traditions of Judaism?