The time to do that was 40 years ago when the people who said come and visit were still alive, but time and money were against me. Today I have time and money, but without the extended family to introduce me to the extended family of my generation, I'd be a stranger knocking on doors. My brother gave that a try, when he was stationed in Japan. He took a hop to Sydney and started looking up old addresses. He didn't find any family, but he did find a nice pub.