Another snippet from 'When Adam was first created' from the Copper Family:

She was not taken out of his head, Sir
To reign and to triumph o'er man
Nor yet from his feet was she taken
By Man to be trampled upon
But she was taken from out of his side, Sir
His equal and partner to be
But when they're united in one, Sir
The man is the top of the tree

(I reckon it breaks down in the last couplet, but I have always interpreted that final 'man' as the combined man-and-woman implied by the line before and 'the top of the tree' as meaning 'cannot be bettered'. Of course, it probably is supposed to mean that after marriage, the man rules. Ho-hum)