A friend of mine is a dedicated genealogist. At one point she was using a will to reconstruct a family tree and came across this sentence:
I bequeath unto my daughter Daisy the cow.
She sealed Daisy to her parents. Further research revealed several references to this family, none of which included a daughter named Daisy. Perplexed, she returned to her original source of information . . . and realized that the sentence would read rather differently if it had included a comma. Additional research showed that she had, in fact, sealed a cow to this family.
Let this be a lesson to you all: sloppy writing can have eternal consequences.