Four-leaf clover: Why are they considered a symbol of good luck?

Surely if you have ever found a four-leaf clover you have thought "This will give good luck!" or "This means I'm really lucky". And yes, for some reason this plant has always been

St Patricks Day postcard Shows a large 4 leaf clover with GOOD LUCK - I patiently tumbled over the postcards old and new, to find this four leaf

St Patrick - Good Luck - Large 4 leaf clover with meaning - w00166

MLB Philadelphia Phillies Three Leaf Clover St Patrick's Day

What are your odds of finding a four-leaf clover? - The Weather

Facts About Four-Leaf Clovers: Why They're Lucky & How They Differ

Diary Of A Green Thumb - The Wave

Lucky and unlucky symbols in Britain

2,500+ Four Leaf Clover Cartoon Stock Photos, Pictures & Royalty

Good luck four leaf clover flat icon for apps and websites #2

Why are Four-Leaf Clovers Lucky?

Set of green shamrock symbol icon hi-res stock photography and images - Alamy

How to Find a Four-Leaf Clover