Thomas Jeffery b. abt. 1850 married a widow, who the Jeffery family knew as Great Aunt Mary Ann. she had ten children by a previous marriage, but they never had any of their own.
One of the children was Hester. They were not Jefferys-their name was Coster

In the 1851 census St. John the Evangelist, Westminster,MDX.
Thomas Jeffery b. abt. 1824-Hertfordshire
Mary-b. abt 1820-South Wales
Thomas b. abt. 1850 MDX.

Thomas Jeffery b. 1824 was the brother of Henry George Jeffery in entry below.

Any connections?