The current death date of 30 June 1965 seems incorrect based on the sources. The correct death date seems to be March 1979 based on a search at Gendatabase https://gendatabase.com/deceased-record.php?q=2798709&r=ADA&... as that record lists the date of birth as 17 Apr 1892.
The Ada Brown who born in England and died on 30 June 1965 was born 14 June 1878 and her maiden surname was Shackleton. She was buried the 3 July 1965.
See:
* Civil Death Notice: https://www.familysearch.org/ark:/61903/3:1:3Q9M-C91K-CHJP
* Burial: https://www.familysearch.org/ark:/61903/1:1:6JQV-ZCT8 and https://www.familysearch.org/ark:/61903/1:1:6NVS-SDFQ
* Death Register: https://www.familysearch.org/ark:/61903/3:1:3QHV-J38J-TJ4T