Many names look unique. You spot one in the tree and think "awesome - easy to find them!" only to discover there are two others in the village and 100 up the road!
Three from the same family I'd guess would be pretty unique are Denmiln Green, Andrina Jane Green and Mary McLaughlin Suttie Green. Given that, why is it so difficult to track down what happened to the last of those three?!
There are a few people with my name, but I have checked my OH and there is only one birth registered for that name and that is him, he has 1 middle name. He does have a slightly unusual spelling of his first name (the person who registered his birth got it a bit wrong )