Grandfather PLIMMER's half-siblings

I know very little of this connection and I am unaware of any off-spring or decendants that are still alive. If anyone out there has a connection or information that will help me fill in the gaps, then please do not hesitate to make contact. If you wish the details to remain private, I will respect your wishes. Thank you!

His father's (James) first marriage took place in 1876 at St John's, Liverpool. His bride was Alice Margaret LUCAS, daughter of Jonathan LUCAS, builder. It is not easy to read the signatures of the witnesses:
?? (B?)UCKLEY
William ????LKES

The off-spring that followed:

1876 birth of a daughter Ada Ann PLIMMER
1878 birth of a daughter Cecilia Maud PLIMMER
1880 birth of a daughter Edith Emily PLIMMER

(1881 at Pringle Street, West Derby)

1882 birth of a daughter Beatrice Annie PLIMMER
1883 death of Beatrice Annie PLIMMER
1884 birth of a son Ernest Cyril Lucas PLIMMER
1885 birth of a son James William J. PLIMMER

1889 birth of a daughter Alice Margaret PLIMMER
1889 death of his wife Alice Margaret PLIMMER (nee LUCAS)
1889 death of Alice Margaret PLIMMER

1891

Ada Ann PLIMMER is a housemaid, servant at The Vicarage, Oakhill Park, West Derby

Edith Emily PLIMMER (as Emily PLIMMER) at 530 Prescot Road, West Derby, with her grandfather Jonathan LUCAS and (step-grandmother?) Catherine M. LUCAS and family

The other living off-spring are with James and his second wife Ellen PLIMMER (nee SWIFT)

1901

All living PLIMMER siblings from the first marriage are living with Catherine LUCAS, widow at 64 Sandstone Road, West Derby