Your grandmother, Aline Maud Swarbrick, was born in or near Blackpool, Lancashire in about 1918. Her parents, William Swarbrick and Annie (Hannah) Edwards were married in the Blackpool area in 1910. Lillian was born Lillian Edwards in 1908 - her mother was not yet married and there is no way to know at this point if William Swarbrick was her father.
After marrying, it appears that William and Hannah had 4 children: Walter c. 1911, John c. 1912, May c. 1914, and your grandmother c. 1918.
Walter appears to have died, age 2 years, in about 1913.