THREE OLD RIDDLES

1)
A man of fourscore winters white
Sat dozing in his chair;
His frosted brow was quite my first,
With glorious silver hair.

My whole lay playing at his feet,
And a glance upward stole;
My second, I can wager you,
Was father of my whole.

2)
One thousand, two hundred,
Nothing and one,
Transposed, give a word
Expressive of fun.

3)
I welcome you home, I cross the wide sea,
I frighten the thief, and I grow on a tree.

Answers:

1. GRANDSON 
2. MCCOI = COMIC
3. BARK