Judy,
Based on your kind copy of Fam. 3521 and your offer to look-up for additional data, may I kindly ask you to send also a copy of the entries Fam. 3515, the parents of George (Philipp & Gertrud) and his siblings, as well as Fam. 1908 (Johann & Katharina Schiller) for Katharina - it looks like she had an additional entry under 1930 ?, as I am still without the clue for Johann Hupfl being the bro-in-law of George.
Thank you in advance
Rudolf