Emma Jolly was overjoyed with her Findmypast discoveries. Here's her family story.My great, great grandmother, Annie Jolly (1882-1969), was London Welsh. She grew up in Stoke Newington in a family named Jones. Her father, David Jones, was a carpenter and builder in the growing northern outskirts of the late 19th-century capital. Annie's London Jones relatives centred around the Welsh enclave of Islington, where they remained long into the 20th century. During the Second World War, Annie's cousin's son, John David…