There are these birth regs Freebmd
all reg in W Derby district
all mother's maiden name haygarth
Jane Jones Sept qtr 1911 8b 662
Florence Jones Mar qtr 1914 8b 684
Doreen Jones Sept qtr 1916 8b 642
William Jones Jun qtr 1918 8b 503
Leslie Jones Sepy qtr 1921 8b 695
Louise Jones mar qtr 1924 8b 801
Thomas Jones Mar qtr 8b 753
there are also quite a few Birth regs abt same time reg in Wirral -mother's maiden name Haygarth
wonder if 2 sisters married 2 brothers?

also could you post the witnesses names from the marriage cert -they may be relatives

??
Suz