Yes, I have noticed Theodore before. With the surname "Chandler", it is quite appropriate that he should have become a Grocer. It's nice to see that he provided a home for his mother in her later years.
I traced(or chased, LOL) Theodore through the census records, I don't think I ever found a death notice for him. I have him last on the 1920 census at approx. 90 years old with daughter Mary and son Howard M, Howard appeared to be a printer. They lived in the 29th Ward of Philadelphia, at 2322 Oxford St.
I hope his wife Jane got along with Mary, it seems Mary lived with them for most of their marriage.