Three of the children of Swedish-born Theodore Baumgardt and his English-born wife ended up in Australia, where he also emigrated himself, late in life, as a widower with none of his children left in Sweden.
Theodore Frederick Baumgardt was a pharmacist. According to a Swedish newspaper he had a pharmacy in Kangaroo Point in 1890.
Marion Georgina Baumgardt married in Brisbane in 1887.
I suspect Theodore Frederic also married in Australia, and both these families had children - I have peeked at Familysearch, but feel that they would be better off in the hands of someone more familiar with Australian sources.
I have orphaned the profiles, just like I did with the third sibling, Emilie Pfannenstiel neé Baumgardt and her family, whose profiles have had some good work done on them since I asked about them yesterday.