I'm still not convinced that Somerton Man fathered Jessica Thomson's son Robin. This theory seems to have grown from suggestions that SM was visiting Jessica because she had given birth to his child. A child that had similar distinguishing features to that of SM, mainly the unusual ears.
Jessica Thomson (nee Harkness) was born in Sydney in 1921. She graduated as a nurse at the Royal North Shore Hospital in 1946. Soon after she discovered she was pregnant and moved to Mentone in Melbourne to live with her parents until the baby was born in 1947. By 1948 Jessica was living in Adelaide as Jessica (or Jo Thomson) with Prosper Thomson, a car salesman. Prosper was often in trouble with the law, mainly through his shonky deals with various vehicles. Prosper was still a married man with a small child in 1948 but the marriage had broken down and in 1950 Prosper was divorced and he and Jessica married the same year. Their daughter Katherine was born soon after.
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Jessica and Robin Thomson.
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Proper Thomson enlisted in the Australian Army in December 1941 and was discharged as unfit in September 1943. His medical condition was described as Post Concussion Syndrome. He'd also suffered from recurring bouts of sinusitis, bronchitis and asthma. Prosper's Army record describes him as being 6' 1" tall, with fair hair and complexion and blue eyes. At the time of his enlistment he was living in Mentone, Melbourne.
Search the collection – National Archives of Australia, Australian Government
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Prosper Thomson.
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Thanks to the recent 60 Minutes segment we now know what Jessica's son Robin looked like and I've used a screencap to compare Robin and Prosper Thomson.
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Prosper and Robin Thomson.
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I can see a distinct similarity between the two. The shape of the face, the eyes and the nose. IMO they could certainly pass for father and son. I just don't see any similarity between Robin Thomson and the photo we've seen of SM. Admittedly that photo was taken when he was deceased and after the autopsy.
So did Jessica leave Sydney after she graduated and was not pregnant, moved to Mentone with her parents and met Prosper who was also living at Mentone at that time? She conceived in Melbourne and after the baby was born all three moved to Adelaide where they weren't known and could live together as husband and wife until Prosper's divorce was final?