John Calvert (mine owner) (1812–1890), Yorkshireman who came to South Wales as a civil engineering contractor and became an important developer of the Rhondda coalfield
This
disambiguation page lists articles about people with the same name. If an
internal link led you here, you may wish to change the link to point directly to the intended article.
John Calvert (mine owner) (1812–1890), Yorkshireman who came to South Wales as a civil engineering contractor and became an important developer of the Rhondda coalfield
This
disambiguation page lists articles about people with the same name. If an
internal link led you here, you may wish to change the link to point directly to the intended article.