Greetings,
I realize it has been several years since this post was made, but I too am researching the descendants of Reverend George Larkham, and I was curious about the naming of Anne Hewetson in his will. Anne's mother couldn't be Jane Larkham because she died at age four years in 1673. Her burial record can be found in the Bridekirk Parish Register: Under 1673: [p. 152] "Apr. 29 Jana Filia Georgii Larkham [genr] de Tallentyro" (see attachment).
I followed a different thought process for Anne Hewetson. George Larkham refers to Anne Hewetson as his "Grandchild" inferring that she was still a minor at the time his will was written. In 17th -18th century England, 15 was considered the age of majority, so Anne Hewetson was probably age 14 or younger on 10 January 1699, giving her a birthdate of 10 January 1685 or later. At the time his will was written, George Larkham's living daughters, Margaret Osmotherly, Patience Langdale, and Mary Bowes were all married to men with surnames other than Hewetson. George Larkham names his living sons in the will, Deliverance Larkham and Lancelot Larkham, so they cannot be the father of Anne Hewetson. The only child of George Larkham who lived to adulthood who is not named in George Larkham's will is Thomas Larkham, born 16 June 1655, so the assumption is he was deceased by 10 January 1699, and most likely the father of Anne Hewetson.
Kind regards,
Sally Russell Cox