It results from the civil records of the National Archives of Luxembourg that Theodore Birnbaum was born the 7th of August 1849 in Rameldange (municipality of Niederanven).
His parents were Johann Birnbaum, a day labourer, and Margaretha Hansen. Johann Birnbaum married Margaretha Hansen the 21st of January 1844 in Niederanven. Johann Birnbaum also was the widower of Anna Hansen who died the 9th of February 1843 in Rameldange.
Johann Birnbaum was born the 15th of March 1808 in Rameldange. His parents were Johann Birnbaum, a weaver who died the 5th of April 1818 in Rameldange, and Anna Weimerskirch who died the 16th of February 1831 in Rameldange.
Margaretha Hansen was born the 16th of May 1822 in Gonderange (municipality of Rodenbourg). Her parents were Paulus Hansen, who died the 29th of November 1822 in Gonderange, and Maria Hoffman, who was present at the marriage of J. Birnbaum and M. Hansen.
Here are the references of the civil records of the municipality of Niederanven:
EC 96, Niederanven, ITEM 1, N 1796-1890, 8.8.1849, N 57, Birnbaum Theodore EC 97, Niederanven, ITEM 1, M 1796-1890, 21.1.1844, N 3, Birnbaum-Hansen
I'll post transcriptions of the two documents with my next messages.