Because ancestry.com is wild.
My grandmother was born in Nuremberg, Germany in 1927. While stories differ as to why, her biological father, Julius Limmer, left the family, remarried, and had another child less than 2 years later. He soon fled to France as Hitler began his rise (if not obvious, this is on the Jewish side of my family). In 1941, Julius emigrated to the US and was soon joined by his new wife and son. They settled in #NYC where he owned and operated a fur shop.
Back in Germany, my grandmother endured the horrors of the Holocaust, but was fortunate enough to live in hiding with a German family for the majority of it. The man she eventually grew to call her father was killed in Auschwitz.
Around 1950, my grandmother met my grandfather in Germany. He was from Poland and spent almost the entirety of the war in concentration camps, with only one sibling surviving out of his whole family.
In 1951 my grandparents were sponsored to come to the US as #refugees or "displaced persons" and settled in Massachusetts. Shortly after their arrival, they traveled to NYC, where my grandmother learned her biological father lived and worked. She walked into his shop and eventually revealed her identity (he had not seen her since she was a small child). He was shocked and exclaimed he couldn't believe she was alive and assumed she had been killed in the war. They formed some kind of relationship over the next few years, but it had to be kept secret from his new family. Julius died suddenly in 1955.
This is where my great-grandfather lived, and this is where his fur shop used to be. I was able to track down various documents with his addresses, SS number, ship's log, etc. To make this even more poignant, my father's currently in #Germany with my grandmother (who turned 90 yesterday) for her birthday. Last night, I found a picture on ancestry.com of my grandmother's half brother, Herbert, who apparently passed away in 1996. My grandmother had never even seen a picture of him and couldn't believe it. Last 2 pics are Julius, one later in life via ancestry.com, the other from my family archives of him and my great-grandma prior to my grandma's birth.