A big tub of water stood wherever there was spare space and Daddy was the first to bathe. Brings home the bacon, needs to be pampered. Then his wife, their children, their relatives and if there was no rub about the tub, neighbors had a pash to splash. Whence came the phrase-- "don't throw the baby out with the bath water." By the time babies' turn came, the water was so dingy and dirty, a baby could disappear in the time it took to toss out the water.
In those days there was magic in the air - both good and tragic. If an engagement ring was lost or stolen, there would be no marriage. Families in May were devoted to their dead relatives and it was no time for a bride to carry a bouquet. Flowers didn't bloom until June, hence the phrase, "What is so rare as a day in June?"
It was considered unlucky for lovers.