I think the Frédérick who wed Clara could have been a younger brother of Alfred.
I don't think he was connected to Alfred. Alfred was 47 in 1911 so born 1863-64. If he was connected - why is he not with either John or Susanna in 1871? Where is his birth reg?
1861 June qtr STOKELEY ALBERT HOWELL mmn HOWELL
MITFORD Volume 04B Page 291
December qtr 1863 STOKELY, FREDERICK WILLIAM mmn HOWELL
MITFORD Volume 04B Page 290
1866 Sept qtr STOKELY, MARY SOPHIA mmn HOWELL
MITFORD Volume 04B Page 267