DPB online shows the baronetcy having become extinct in 2019 so the 6th Baronet must have died in that year. He was resident in Welland, Ontario acc to DPB 2019. He had a sister Diana Charlotte LINDLEY resident in Steens, Mississippi (same source). He also had a 1st w (m 1972) Sheila J WAKEFIELD. DPB states he and his mother and sister emigrated to the the USA in 1947
I have had a very quick search for a death notice/obit but haven't found anything but must go to bed now.