This was exciting as I had traced George’s family and had only recently become aware of George’s second marital relationship when the Ontario marriage records became available on Ancestry.com; however, I never knew of any children that were born to this brief relationship. After a score of emails that day, we concluded that we were fourth cousins and began a research relationship that has lasted two years, and hopefully will last a lifetime.

http://linealarboretum.blogspot.com/2010/08/

I was never aware of any children named Jane or Wiley. ~~~~~ Mary E. Comer, wife of the late Charles G. Comer, died on Saturday, Sept. 6, 1969, at 5 a.m. at the home of her daughter, Mrs. William C. Brackins of Churchville, after a lingering illness. Dr. Willard P. Hudson was the attending physician. A son, Joe, served as the informant for the death certificate.

https://comerfamilyalbum.webs.com/charliesfamily.htm

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Note added at 26 mins (2021-03-28 00:06:40 GMT)
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"I am the son of the late sultan of Bussorah, and my name is Zeyn Alasnam." "That sovereign," said Mobarec, "was formerly my master; but, my lord, I never knew of any children he had: what is your age?" "I am twenty years old," answered the sultan. "How long is it since you left my father's court?"

https://dailylit.com/read/222-the-arabian-nights?page=291

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Note added at 28 mins (2021-03-28 00:07:56 GMT)
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(know of someone/something) to know that someone or something exists and who, what, or where they are

https://www.macmillandictionary.com/dictionary/british/know-...