Answer:
Who has married many women but never has been married who is he
I have four wings but cannot fly. I never laugh and never cry. On the same spot always found, toiling away with little sound.
By Moon or by Sun, I shall be found. Yet I am undone, if there's no light around
Pregnant every time you see her, yet she never will give birth.
Until I am measured I am not known, Yet how you miss me when I have flown.
All about, but cannot be seen, Can be captured, cannot be held, No throat, but can be heard. Who am I?