Dolly Harker was the mother of Pat Sugden and Janie Blakey, and the maternal grandmother of Jackie Merrick, Sandie Merrick and Robert Sugden.

Dolly was still alive in 1974 when traveller Dryden Hogben handed her back the keys to the old forge, as Dolly was looking after it for her son in law Frank Blakey. However, in July 1980, Pat visited her mum's grave when she decided to return to Beckindale, meaning Dolly had died by then.

In Episode 121 (17th December 1973), Dolly's name was said to be Louise, but in Episode 183 (5th August 1974) her name was said to be Dolly.

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