The John Schulingkamp living with his sister Anna is my great-grandfather, John Sr. I first learned of him many years ago around 1976 when I began researching my family tree. Great-grandma was still alive then and I asked her about grandpa's father since we had no information on him. She could only tell me that his name was John Schulingkamp and that he was much older than her and that he died in when grandpa was 3 years old. I eventually turned up a John Schulingkamp who was born in 1860 and thus a man in his mid-50s when grandpa was born (fitting the much older criteria and great-grandma was born in 1894) and who died in 1918 (fitting the 'died when grandpa was 3 years old' criteria). He married Theresa Meyer in 1883 and had five children, Clara, John Jr, Anna, Henry, and William who died at two months old. Later, John Sr and Theresa appear to have separated and John Sr had a relationship with Beatrice Norra, my great-grandmother, and they had two children, John Roy (who went by Roy) and Thomas (my grandfather). In the early 20th century John Sr was living with his sister Anna Schulingkamp Boyer at 2816 Urquhart and appears in several city directories and the 1910 US Census at that address. He disappears from the city directories for a few years after that but grandpa was born in December of 1915 at 811 Iberville St where Grandma Bea lived at the time which is just off the corner of Iberville and Bourbon St in the Quarter so maybe he was living with her. John Sr worked as a foreman for the US Public Health Service at that time and died just 3 years later in 1918 of what appears to be "asthma, acute bronchitis" although it is hard to make out exactly on the death certificate. I suspect, given that he worked for the US Public Health Service, that he was exposed to and died from the 1918 Spanish Influenza. His wake was held at his brother Emile's house. Sister Anna had died at the beginning of 1918 and brother Emile ended up dying just a few months after John - a bad year overall for the Schulingkamp family.
John Schulingkamp Sr's parents were William Schülingkamp and Clara Tekla Tenbusch.